diff options
Diffstat (limited to 'drivers/tty')
85 files changed, 224 insertions, 468 deletions
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c index 2d1357acbc23..4c7d70172193 100644 --- a/drivers/tty/amiserial.c +++ b/drivers/tty/amiserial.c @@ -251,7 +251,6 @@ static void receive_chars(struct serial_state *info) { int status; int serdatr; - struct tty_struct *tty = info->tport.tty; unsigned char ch, flag; struct async_icount *icount; int oe = 0; @@ -314,7 +313,7 @@ static void receive_chars(struct serial_state *info) #endif flag = TTY_BREAK; if (info->tport.flags & ASYNC_SAK) - do_SAK(tty); + do_SAK(info->tport.tty); } else if (status & UART_LSR_PE) flag = TTY_PARITY; else if (status & UART_LSR_FE) @@ -331,7 +330,7 @@ static void receive_chars(struct serial_state *info) tty_insert_flip_char(&info->tport, ch, flag); if (oe == 1) tty_insert_flip_char(&info->tport, 0, TTY_OVERRUN); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&info->tport); out: return; } diff --git a/drivers/tty/bfin_jtag_comm.c b/drivers/tty/bfin_jtag_comm.c index 143c38579cb5..a93a424873fa 100644 --- a/drivers/tty/bfin_jtag_comm.c +++ b/drivers/tty/bfin_jtag_comm.c @@ -95,18 +95,16 @@ bfin_jc_emudat_manager(void *arg) /* if incoming data is ready, eat it */ if (bfin_read_DBGSTAT() & EMUDIF) { - if (tty != NULL) { - uint32_t emudat = bfin_read_emudat(); - if (inbound_len == 0) { - pr_debug("incoming length: 0x%08x\n", emudat); - inbound_len = emudat; - } else { - size_t num_chars = (4 <= inbound_len ? 4 : inbound_len); - pr_debug(" incoming data: 0x%08x (pushing %zu)\n", emudat, num_chars); - inbound_len -= num_chars; - tty_insert_flip_string(&port, (unsigned char *)&emudat, num_chars); - tty_flip_buffer_push(tty); - } + uint32_t emudat = bfin_read_emudat(); + if (inbound_len == 0) { + pr_debug("incoming length: 0x%08x\n", emudat); + inbound_len = emudat; + } else { + size_t num_chars = (4 <= inbound_len ? 4 : inbound_len); + pr_debug(" incoming data: 0x%08x (pushing %zu)\n", emudat, num_chars); + inbound_len -= num_chars; + tty_insert_flip_string(&port, (unsigned char *)&emudat, num_chars); + tty_flip_buffer_push(&port); } } diff --git a/drivers/tty/ehv_bytechan.c b/drivers/tty/ehv_bytechan.c index 5164f9a57017..ed92622b8949 100644 --- a/drivers/tty/ehv_bytechan.c +++ b/drivers/tty/ehv_bytechan.c @@ -371,16 +371,11 @@ console_initcall(ehv_bc_console_init); static irqreturn_t ehv_bc_tty_rx_isr(int irq, void *data) { struct ehv_bc_data *bc = data; - struct tty_struct *ttys = tty_port_tty_get(&bc->port); unsigned int rx_count, tx_count, len; int count; char buffer[EV_BYTE_CHANNEL_MAX_BYTES]; int ret; - /* ttys could be NULL during a hangup */ - if (!ttys) - return IRQ_HANDLED; - /* Find out how much data needs to be read, and then ask the TTY layer * if it can handle that much. We want to ensure that every byte we * read from the byte channel will be accepted by the TTY layer. @@ -422,9 +417,7 @@ static irqreturn_t ehv_bc_tty_rx_isr(int irq, void *data) } /* Tell the tty layer that we're done. */ - tty_flip_buffer_push(ttys); - - tty_kref_put(ttys); + tty_flip_buffer_push(&bc->port); return IRQ_HANDLED; } diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c index 8c2fe3a0e091..eb255e807c06 100644 --- a/drivers/tty/hvc/hvc_console.c +++ b/drivers/tty/hvc/hvc_console.c @@ -691,7 +691,7 @@ int hvc_poll(struct hvc_struct *hp) a minimum for performance. */ timeout = MIN_TIMEOUT; - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&hp->port); } tty_kref_put(tty); diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c index 7bfc0a924b2f..1956593ee89d 100644 --- a/drivers/tty/hvc/hvcs.c +++ b/drivers/tty/hvc/hvcs.c @@ -623,7 +623,7 @@ static int hvcs_io(struct hvcs_struct *hvcsd) spin_unlock_irqrestore(&hvcsd->lock, flags); /* This is synch because tty->low_latency == 1 */ if(got) - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&hvcsd->port); if (!got) { /* Do this _after_ the flip_buffer_push */ diff --git a/drivers/tty/hvc/hvsi.c b/drivers/tty/hvc/hvsi.c index 1f528b8ebf5f..dc591290120b 100644 --- a/drivers/tty/hvc/hvsi.c +++ b/drivers/tty/hvc/hvsi.c @@ -465,7 +465,7 @@ static int hvsi_load_chunk(struct hvsi_struct *hp, struct tty_struct *tty, compact_inbuf(hp, packet); if (flip) - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&hp->port); return 1; } @@ -511,7 +511,7 @@ static irqreturn_t hvsi_interrupt(int irq, void *arg) /* we weren't hung up and we weren't throttled, so we can * deliver the rest now */ hvsi_send_overflow(hp); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&hp->port); } spin_unlock_irqrestore(&hp->lock, flags); @@ -998,7 +998,7 @@ static void hvsi_unthrottle(struct tty_struct *tty) spin_lock_irqsave(&hp->lock, flags); if (hp->n_throttle) { hvsi_send_overflow(hp); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&hp->port); } spin_unlock_irqrestore(&hp->lock, flags); diff --git a/drivers/tty/ipwireless/tty.c b/drivers/tty/ipwireless/tty.c index c43da7445432..8fd72ff9436e 100644 --- a/drivers/tty/ipwireless/tty.c +++ b/drivers/tty/ipwireless/tty.c @@ -160,15 +160,9 @@ static void ipw_close(struct tty_struct *linux_tty, struct file *filp) void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data, unsigned int length) { - struct tty_struct *linux_tty; int work = 0; mutex_lock(&tty->ipw_tty_mutex); - linux_tty = tty->port.tty; - if (linux_tty == NULL) { - mutex_unlock(&tty->ipw_tty_mutex); - return; - } if (!tty->port.count) { mutex_unlock(&tty->ipw_tty_mutex); @@ -187,7 +181,7 @@ void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data, * This may sleep if ->low_latency is set */ if (work) - tty_flip_buffer_push(linux_tty); + tty_flip_buffer_push(&tty->port); } static void ipw_write_packet_sent_callback(void *callback_data, diff --git a/drivers/tty/isicom.c b/drivers/tty/isicom.c index c70144f55fc0..858291ca889c 100644 --- a/drivers/tty/isicom.c +++ b/drivers/tty/isicom.c @@ -637,7 +637,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) tty_insert_flip_char(&port->port, 0, TTY_BREAK); if (port->port.flags & ASYNC_SAK) do_SAK(tty); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&port->port); break; case 2: /* Statistics */ @@ -671,7 +671,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) byte_count -= 2; } } - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&port->port); } outw(0x0000, base+0x04); /* enable interrupts */ spin_unlock(&card->card_lock); diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index e9cdfdfe06e9..ad34a202a34d 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -2145,7 +2145,7 @@ end_intr: * recursive locking. */ spin_unlock(&port->slock); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&port->port); spin_lock(&port->slock); } diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 4a3342d21c8f..d84dcfeadce3 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -1141,7 +1141,6 @@ static void gsm_control_modem(struct gsm_mux *gsm, u8 *data, int clen) static void gsm_control_rls(struct gsm_mux *gsm, u8 *data, int clen) { struct tty_port *port; - struct tty_struct *tty; unsigned int addr = 0 ; u8 bits; int len = clen; @@ -1174,12 +1173,8 @@ static void gsm_control_rls(struct gsm_mux *gsm, u8 *data, int clen) if (bits & 8) tty_insert_flip_char(port, 0, TTY_FRAME); - /* See if we have an uplink tty */ - tty = tty_port_tty_get(port); - if (tty) { - tty_flip_buffer_push(tty); - tty_kref_put(tty); - } + tty_flip_buffer_push(port); + gsm_control_reply(gsm, CMD_RLS, data, clen); } @@ -1552,36 +1547,37 @@ static void gsm_dlci_data(struct gsm_dlci *dlci, u8 *data, int clen) { /* krefs .. */ struct tty_port *port = &dlci->port; - struct tty_struct *tty = tty_port_tty_get(port); + struct tty_struct *tty; unsigned int modem = 0; int len = clen; if (debug & 16) - pr_debug("%d bytes for tty %p\n", len, tty); - if (tty) { - switch (dlci->adaption) { - /* Unsupported types */ - /* Packetised interruptible data */ - case 4: - break; - /* Packetised uininterruptible voice/data */ - case 3: - break; - /* Asynchronous serial with line state in each frame */ - case 2: - while (gsm_read_ea(&modem, *data++) == 0) { - len--; - if (len == 0) - return; - } + pr_debug("%d bytes for tty\n", len); + switch (dlci->adaption) { + /* Unsupported types */ + /* Packetised interruptible data */ + case 4: + break; + /* Packetised uininterruptible voice/data */ + case 3: + break; + /* Asynchronous serial with line state in each frame */ + case 2: + while (gsm_read_ea(&modem, *data++) == 0) { + len--; + if (len == 0) + return; + } + tty = tty_port_tty_get(port); + if (tty) { gsm_process_modem(tty, dlci, modem, clen); - /* Line state will go via DLCI 0 controls only */ - case 1: - default: - tty_insert_flip_string(port, data, len); - tty_flip_buffer_push(tty); + tty_kref_put(tty); } - tty_kref_put(tty); + /* Line state will go via DLCI 0 controls only */ + case 1: + default: + tty_insert_flip_string(port, data, len); + tty_flip_buffer_push(port); } } diff --git a/drivers/tty/nozomi.c b/drivers/tty/nozomi.c index 941fe8060ea5..afdd7732d925 100644 --- a/drivers/tty/nozomi.c +++ b/drivers/tty/nozomi.c @@ -1272,15 +1272,11 @@ static irqreturn_t interrupt_handler(int irq, void *dev_id) exit_handler: spin_unlock(&dc->spin_mutex); - for (a = 0; a < NOZOMI_MAX_PORTS; a++) { - struct tty_struct *tty; - if (test_and_clear_bit(a, &dc->flip)) { - tty = tty_port_tty_get(&dc->port[a].port); - if (tty) - tty_flip_buffer_push(tty); - tty_kref_put(tty); - } - } + + for (a = 0; a < NOZOMI_MAX_PORTS; a++) + if (test_and_clear_bit(a, &dc->flip)) + tty_flip_buffer_push(&dc->port[a].port); + return IRQ_HANDLED; none: spin_unlock(&dc->spin_mutex); diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index 3c285d398f38..32d027c303aa 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -123,7 +123,7 @@ static int pty_write(struct tty_struct *tty, const unsigned char *buf, int c) c = tty_insert_flip_string(to->port, buf, c); /* And shovel */ if (c) { - tty_flip_buffer_push(to); + tty_flip_buffer_push(to->port); tty_wakeup(tty); } } diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c index 5848a767001a..8073cc0dff59 100644 --- a/drivers/tty/rocket.c +++ b/drivers/tty/rocket.c @@ -315,9 +315,8 @@ static inline int rocket_paranoia_check(struct r_port *info, * that receive data is present on a serial port. Pulls data from FIFO, moves it into the * tty layer. */ -static void rp_do_receive(struct r_port *info, - struct tty_struct *tty, - CHANNEL_t * cp, unsigned int ChanStatus) +static void rp_do_receive(struct r_port *info, CHANNEL_t *cp, + unsigned int ChanStatus) { unsigned int CharNStat; int ToRecv, wRecv, space; @@ -416,7 +415,7 @@ static void rp_do_receive(struct r_port *info, cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp)); } /* Push the data up to the tty layer */ - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&info->port); } /* @@ -495,7 +494,6 @@ static void rp_do_transmit(struct r_port *info) static void rp_handle_port(struct r_port *info) { CHANNEL_t *cp; - struct tty_struct *tty; unsigned int IntMask, ChanStatus; if (!info) @@ -506,12 +504,7 @@ static void rp_handle_port(struct r_port *info) "info->flags & NOT_INIT\n"); return; } - tty = tty_port_tty_get(&info->port); - if (!tty) { - printk(KERN_WARNING "rp: WARNING: rp_handle_port called with " - "tty==NULL\n"); - return; - } + cp = &info->channel; IntMask = sGetChanIntID(cp) & info->intmask; @@ -520,7 +513,7 @@ static void rp_handle_port(struct r_port *info) #endif ChanStatus = sGetChanStatus(cp); if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */ - rp_do_receive(info, tty, cp, ChanStatus); + rp_do_receive(info, cp, ChanStatus); } if (IntMask & DELTA_CD) { /* CD change */ #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP)) @@ -528,10 +521,15 @@ static void rp_handle_port(struct r_port *info) (ChanStatus & CD_ACT) ? "on" : "off"); #endif if (!(ChanStatus & CD_ACT) && info->cd_status) { + struct tty_struct *tty; #ifdef ROCKET_DEBUG_HANGUP printk(KERN_INFO "CD drop, calling hangup.\n"); #endif - tty_hangup(tty); + tty = tty_port_tty_get(&info->port); + if (tty) { + tty_hangup(tty); + tty_kref_put(tty); + } } info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0; wake_up_interruptible(&info->port.open_wait); @@ -544,7 +542,6 @@ static void rp_handle_port(struct r_port *info) printk(KERN_INFO "DSR change...\n"); } #endif - tty_kref_put(tty); } /* diff --git a/drivers/tty/serial/21285.c b/drivers/tty/serial/21285.c index a44345a2dbb4..c7e8b60b6177 100644 --- a/drivers/tty/serial/21285.c +++ b/drivers/tty/serial/21285.c @@ -85,7 +85,6 @@ static void serial21285_enable_ms(struct uart_port *port) static irqreturn_t serial21285_rx_chars(int irq, void *dev_id) { struct uart_port *port = dev_id; - struct tty_struct *tty = port->state->port.tty; unsigned int status, ch, flag, rxs, max_count = 256; status = *CSR_UARTFLG; @@ -115,7 +114,7 @@ static irqreturn_t serial21285_rx_chars(int irq, void *dev_id) status = *CSR_UARTFLG; } - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&port->state->port); return IRQ_HANDLED; } diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c index 5fb6577b94dc..0d771ec16750 100644 --- a/drivers/tty/serial/8250/8250.c +++ b/drivers/tty/serial/8250/8250.c @@ -1323,7 +1323,6 @@ unsigned char serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr) { struct uart_port *port = &up->port; - struct tty_struct *tty = port->state->port.tty; unsigned char ch; int max_count = 256; char flag; @@ -1388,7 +1387,7 @@ ignore_char: lsr = serial_in(up, UART_LSR); } while ((lsr & (UART_LSR_DR | UART_LSR_BI)) && (max_count-- > 0)); spin_unlock(&port->lock); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&port->state->port); spin_lock(&port->lock); return lsr; } diff --git a/drivers/tty/serial/altera_jtaguart.c b/drivers/tty/serial/altera_jtaguart.c index 872f14ae43d2..84b90fd48063 100644 --- a/drivers/tty/serial/altera_jtaguart.c +++ b/drivers/tty/serial/altera_jtaguart.c @@ -139,7 +139,7 @@ static void altera_jtaguart_rx_chars(struct altera_jtaguart *pp) uart_insert_char(port, 0, 0, ch, flag); } - tty_flip_buffer_push(port->state->port.tty); + tty_flip_buffer_push(&port->state->port); } static void altera_jtaguart_tx_chars(struct altera_jtaguart *pp) diff --git a/drivers/tty/serial/altera_uart.c b/drivers/tty/serial/altera_uart.c index 684a0808e1c7..e133c8814bb5 100644 --- a/drivers/tty/serial/altera_uart.c +++ b/drivers/tty/serial/altera_uart.c @@ -231,7 +231,7 @@ static void altera_uart_rx_chars(struct altera_uart *pp) flag); } - tty_flip_buffer_push(port->state->port.tty); + tty_flip_buffer_push(&port->state->port); } static void altera_uart_tx_chars(struct altera_uart *pp) diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c index 22317dd16474..c36840519527 100644 --- a/drivers/tty/serial/amba-pl010.c +++ b/drivers/tty/serial/amba-pl010.c @@ -116,7 +116,6 @@ static void pl010_enable_ms(struct uart_port *port) static void pl010_rx_chars(struct uart_amba_port *uap) { - struct tty_struct *tty = uap->port.state->port.tty; unsigned int status, ch, flag, rsr, max_count = 256; status = readb(uap->port.membase + UART01x_FR); @@ -165,7 +164,7 @@ static void pl010_rx_chars(struct uart_amba_port *uap) status = readb(uap->port.membase + UART01x_FR); } spin_unlock(&uap->port.lock); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&uap->port.state->port); spin_lock(&uap->port.lock); } diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index e1257d17f5f0..3ea5408fcbeb 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -699,7 +699,6 @@ static void pl011_dma_rx_chars(struct uart_amba_port *uap, bool readfifo) { struct tty_port *port = &uap->port.state->port; - struct tty_struct *tty = port->tty; struct pl011_sgbuf *sgbuf = use_buf_b ? &uap->dmarx.sgbuf_b : &uap->dmarx.sgbuf_a; struct device *dev = uap->dmarx.chan->device->dev; @@ -754,7 +753,7 @@ static void pl011_dma_rx_chars(struct uart_amba_port *uap, dev_vdbg(uap->port.dev, "Took %d chars from DMA buffer and %d chars from the FIFO\n", dma_count, fifotaken); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(port); spin_lock(&uap->port.lock); } @@ -1076,12 +1075,10 @@ static void pl011_enable_ms(struct uart_port *port) static void pl011_rx_chars(struct uart_amba_port *uap) { - struct tty_struct *tty = uap->port.state->port.tty; - pl011_fifo_to_tty(uap); spin_unlock(&uap->port.lock); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&uap->port.state->port); /* * If we were temporarily out of DMA mode for a while, * attempt to switch back to DMA mode again. diff --git a/drivers/tty/serial/apbuart.c b/drivers/tty/serial/apbuart.c index 59ae2b53e765..6331464d9101 100644 --- a/drivers/tty/serial/apbuart.c +++ b/drivers/tty/serial/apbuart.c @@ -78,7 +78,6 @@ static void apbuart_enable_ms(struct uart_port *port) static void apbuart_rx_chars(struct uart_port *port) { - struct tty_struct *tty = port->state->port.tty; unsigned int status, ch, rsr, flag; unsigned int max_chars = port->fifosize; @@ -126,7 +125,7 @@ static void apbuart_rx_chars(struct uart_port *port) status = UART_GET_STATUS(port); } - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&port->state->port); } static void apbuart_tx_chars(struct uart_port *port) diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c index 6ca5dd615f9e..27f20c57abed 100644 --- a/drivers/tty/serial/ar933x_uart.c +++ b/drivers/tty/serial/ar933x_uart.c @@ -298,10 +298,8 @@ static void ar933x_uart_set_termios(struct uart_port *port, static void ar933x_uart_rx_chars(struct ar933x_uart_port *up) { struct tty_port *port = &up->port.state->port; - struct tty_struct *tty; int max_count = 256; - tty = tty_port_tty_get(port); do { unsigned int rdata; unsigned char ch; @@ -324,10 +322,7 @@ static void ar933x_uart_rx_chars(struct ar933x_uart_port *up) tty_insert_flip_char(port, ch, TTY_NORMAL); } while (max_count-- > 0); - if (tty) { - tty_flip_buffer_push(tty); - tty_kref_put(tty); - } + tty_flip_buffer_push(port); } static void ar933x_uart_tx_chars(struct ar933x_uart_port *up) diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c index b46860104312..da734222e537 100644 --- a/drivers/tty/serial/arc_uart.c +++ b/drivers/tty/serial/arc_uart.c @@ -211,12 +211,8 @@ static void arc_serial_start_tx(struct uart_port *port) static void arc_serial_rx_chars(struct arc_uart_port *uart) { - struct tty_struct *tty = tty_port_tty_get(&uart->port.state->port); unsigned int status, ch, flg = 0; - if (!tty) - return; - /* * UART has 4 deep RX-FIFO. Driver's recongnition of this fact * is very subtle. Here's how ... @@ -252,10 +248,8 @@ static void arc_serial_rx_chars(struct arc_uart_port *uart) uart_insert_char(&uart->port, status, RXOERR, ch, flg); done: - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&uart->port.state->port); } - - tty_kref_put(tty); } /* diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index 929567038c5a..d4a7c241b751 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -774,7 +774,7 @@ static void atmel_rx_from_ring(struct uart_port *port) * uart_start(), which takes the lock. */ spin_unlock(&port->lock); - tty_flip_buffer_push(port->state->port.tty); + tty_flip_buffer_push(&port->state->port); spin_lock(&port->lock); } @@ -782,7 +782,6 @@ static void atmel_rx_from_dma(struct uart_port *port) { struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); struct tty_port *tport = &port->state->port; - struct tty_struct *tty = tport->tty; struct atmel_dma_buffer *pdc; int rx_idx = atmel_port->pdc_rx_idx; unsigned int head; @@ -850,7 +849,7 @@ static void atmel_rx_from_dma(struct uart_port *port) * uart_start(), which takes the lock. */ spin_unlock(&port->lock); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tport); spin_lock(&port->lock); UART_PUT_IER(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT); diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c index de30b1909728..719594e5fc21 100644 --- a/drivers/tty/serial/bcm63xx_uart.c +++ b/drivers/tty/serial/bcm63xx_uart.c @@ -236,14 +236,12 @@ static const char *bcm_uart_type(struct uart_port *port) static void bcm_uart_do_rx(struct uart_port *port) { struct tty_port *port = &port->state->port; - struct tty_struct *tty; unsigned int max_count; /* limit number of char read in interrupt, should not be * higher than fifo size anyway since we're much faster than * serial port */ max_count = 32; - tty = port->tty; do { unsigned int iestat, c, cstat; char flag; @@ -305,7 +303,7 @@ static void bcm_uart_do_rx(struct uart_port *port) } while (--max_count); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(port); } /* diff --git a/drivers/tty/serial/bfin_sport_uart.c b/drivers/tty/serial/bfin_sport_uart.c index e4d3ac2e8992..487c173b0f72 100644 --- a/drivers/tty/serial/bfin_sport_uart.c +++ b/drivers/tty/serial/bfin_sport_uart.c @@ -150,7 +150,6 @@ static irqreturn_t sport_uart_rx_irq(int irq, void *dev_id) { struct sport_uart_port *up = dev_id; struct tty_port *port = &up->port.state->port; - struct tty_struct *tty = tport->tty; unsigned int ch; spin_lock(&up->port.lock); @@ -162,7 +161,8 @@ static irqreturn_t sport_uart_rx_irq(int irq, void *dev_id) if (!uart_handle_sysrq_char(&up->port, ch)) tty_insert_flip_char(port, ch, TTY_NORMAL); } - tty_flip_buffer_push(tty); + /* XXX this won't deadlock with lowlat? */ + tty_flip_buffer_push(port); spin_unlock(&up->port.lock); diff --git a/drivers/tty/serial/bfin_uart.c b/drivers/tty/serial/bfin_uart.c index 2e2b2c1cb722..12dceda9db33 100644 --- a/drivers/tty/serial/bfin_uart.c +++ b/drivers/tty/serial/bfin_uart.c @@ -223,7 +223,6 @@ static void bfin_serial_enable_ms(struct uart_port *port) #ifdef CONFIG_SERIAL_BFIN_PIO static void bfin_serial_rx_chars(struct bfin_serial_port *uart) { - struct tty_struct *tty = NULL; unsigned int status, ch, flg; static struct timeval anomaly_start = { .tv_sec = 0 }; @@ -242,11 +241,9 @@ static void bfin_serial_rx_chars(struct bfin_serial_port *uart) return; } - if (!uart->port.state || !uart->port.state->port.tty) + if (!uart->port.state) return; #endif - tty = uart->port.state->port.tty; - if (ANOMALY_05000363) { /* The BF533 (and BF561) family of processors have a nice anomaly * where they continuously generate characters for a "single" break. @@ -325,7 +322,7 @@ static void bfin_serial_rx_chars(struct bfin_serial_port *uart) uart_insert_char(&uart->port, status, OE, ch, flg); ignore_char: - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&uart->port.state->port); } static void bfin_serial_tx_chars(struct bfin_serial_port *uart) @@ -426,7 +423,6 @@ static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart) static void bfin_serial_dma_rx_chars(struct bfin_serial_port *uart) { - struct tty_struct *tty = uart->port.state->port.tty; int i, flg, status; status = UART_GET_LSR(uart); @@ -471,7 +467,7 @@ static void bfin_serial_dma_rx_chars(struct bfin_serial_port *uart) } dma_ignore_char: - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&uart->port.state->port); } void bfin_serial_rx_dma_timeout(struct bfin_serial_port *uart) diff --git a/drivers/tty/serial/clps711x.c b/drivers/tty/serial/clps711x.c index 3fd2526d121e..bfb17968c8db 100644 --- a/drivers/tty/serial/clps711x.c +++ b/drivers/tty/serial/clps711x.c @@ -85,12 +85,8 @@ static void uart_clps711x_enable_ms(struct uart_port *port) static irqreturn_t uart_clps711x_int_rx(int irq, void *dev_id) { struct uart_port *port = dev_id; - struct tty_struct *tty = tty_port_tty_get(&port->state->port); unsigned int status, ch, flg; - if (!tty) - return IRQ_HANDLED; - for (;;) { status = clps_readl(SYSFLG(port)); if (status & SYSFLG_URXFE) @@ -130,9 +126,7 @@ static irqreturn_t uart_clps711x_int_rx(int irq, void *dev_id) uart_insert_char(port, status, UARTDR_OVERR, ch, flg); } - tty_flip_buffer_push(tty); - - tty_kref_put(tty); + tty_flip_buffer_push(&port->state->port); return IRQ_HANDLED; } diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_core.c b/drivers/tty/serial/cpm_uart/cpm_uart_core.c index 0bb24378a3c0..97f4e1858649 100644 --- a/drivers/tty/serial/cpm_uart/cpm_uart_core.c +++ b/drivers/tty/serial/cpm_uart/cpm_uart_core.c @@ -246,7 +246,6 @@ static void cpm_uart_int_rx(struct uart_port *port) unsigned char ch; u8 *cp; struct tty_port *tport = &port->state->port; - struct tty_struct *tty = tport->tty; struct uart_cpm_port *pinfo = (struct uart_cpm_port *)port; cbd_t __iomem *bdp; u16 status; @@ -323,7 +322,7 @@ static void cpm_uart_int_rx(struct uart_port *port) pinfo->rx_cur = bdp; /* activate BH processing */ - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tport); return; diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c index 52449adc09ac..45acf103433e 100644 --- a/drivers/tty/serial/crisv10.c +++ b/drivers/tty/serial/crisv10.c @@ -2104,17 +2104,10 @@ static int force_eop_if_needed(struct e100_serial *info) static void flush_to_flip_buffer(struct e100_serial *info) { - struct tty_struct *tty; struct etrax_recv_buffer *buffer; unsigned long flags; local_irq_save(flags); - tty = info->port.tty; - - if (!tty) { - local_irq_restore(flags); - return; - } while ((buffer = info->first_recv_buffer) != NULL) { unsigned int count = buffer->length; @@ -2138,7 +2131,7 @@ static void flush_to_flip_buffer(struct e100_serial *info) local_irq_restore(flags); /* This includes a check for low-latency */ - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&info->port); } static void check_flush_timeout(struct e100_serial *info) @@ -2274,12 +2267,6 @@ static struct e100_serial * handle_ser_rx_interrupt_no_dma(struct e100_serial *info) { unsigned long data_read; - struct tty_struct *tty = info->port.tty; - - if (!tty) { - printk("!NO TTY!\n"); - return info; - } /* Read data and status at the same time */ data_read = *((unsigned long *)&info->ioport[REG_DATA_STATUS32]); @@ -2382,7 +2369,7 @@ more_data: goto more_data; } - tty_flip_buffer_push(info->port.tty); + tty_flip_buffer_push(&info->port); return info; } diff --git a/drivers/tty/serial/dz.c b/drivers/tty/serial/dz.c index 6491b8644a7f..2f2b2e538a54 100644 --- a/drivers/tty/serial/dz.c +++ b/drivers/tty/serial/dz.c @@ -187,7 +187,6 @@ static inline void dz_receive_chars(struct dz_mux *mux) { struct uart_port *uport; struct dz_port *dport = &mux->dport[0]; - struct tty_struct *tty = NULL; struct uart_icount *icount; int lines_rx[DZ_NB_PORT] = { [0 ... DZ_NB_PORT - 1] = 0 }; unsigned char ch, flag; @@ -197,7 +196,6 @@ static inline void dz_receive_chars(struct dz_mux *mux) while ((status = dz_in(dport, DZ_RBUF)) & DZ_DVAL) { dport = &mux->dport[LINE(status)]; uport = &dport->port; - tty = uport->state->port.tty; /* point to the proper dev */ ch = UCHAR(status); /* grab the char */ flag = TTY_NORMAL; @@ -249,7 +247,7 @@ static inline void dz_receive_chars(struct dz_mux *mux) } for (i = 0; i < DZ_NB_PORT; i++) if (lines_rx[i]) - tty_flip_buffer_push(mux->dport[i].port.state->port.tty); + tty_flip_buffer_push(&mux->dport[i].port.state->port); } /* diff --git a/drivers/tty/serial/efm32-uart.c b/drivers/tty/serial/efm32-uart.c index bdf67b0cb8b6..de14bd7dce10 100644 --- a/drivers/tty/serial/efm32-uart.c +++ b/drivers/tty/serial/efm32-uart.c @@ -249,12 +249,9 @@ static irqreturn_t efm32_uart_rxirq(int irq, void *data) int handled = IRQ_NONE; struct uart_port *port = &efm_port->port; struct tty_port *tport = &port->state->port; - struct tty_struct *tty; spin_lock(&port->lock); - tty = tty_kref_get(tport->tty); - if (irqflag & UARTn_IF_RXDATAV) { efm32_uart_write32(efm_port, UARTn_IF_RXDATAV, UARTn_IFC); efm32_uart_rx_chars(efm_port); @@ -270,10 +267,7 @@ static irqreturn_t efm32_uart_rxirq(int irq, void *data) handled = IRQ_HANDLED; } - if (tty) { - tty_flip_buffer_push(tty); - tty_kref_put(tty); - } + tty_flip_buffer_push(tport); spin_unlock(&port->lock); diff --git a/drivers/tty/serial/icom.c b/drivers/tty/serial/icom.c index 54903ee5e5ab..bc9e6b017b05 100644 --- a/drivers/tty/serial/icom.c +++ b/drivers/tty/serial/icom.c @@ -735,7 +735,6 @@ static void recv_interrupt(u16 port_int_reg, struct icom_port *icom_port) { short int count, rcv_buff; struct tty_port *port = &icom_port->uart_port.state->port; - struct tty_struct *tty = port->tty; unsigned short int status; struct uart_icount *icount; unsigned long offset; @@ -835,7 +834,7 @@ ignore_char: status = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].flags); } icom_port->next_rcv = rcv_buff; - tty_flip_buffer_push(tty); + tty_flip_buffer_push(port); } static void process_interrupt(u16 port_int_reg, diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c index 4bc6e47890b4..6a6668bbb330 100644 --- a/drivers/tty/serial/ifx6x60.c +++ b/drivers/tty/serial/ifx6x60.c @@ -669,12 +669,8 @@ static const struct tty_operations ifx_spi_serial_ops = { static void ifx_spi_insert_flip_string(struct ifx_spi_device *ifx_dev, unsigned char *chars, size_t size) { - struct tty_struct *tty = tty_port_tty_get(&ifx_dev->tty_port); - if (!tty) - return; tty_insert_flip_string(&ifx_dev->tty_port, chars, size); - tty_flip_buffer_push(tty); - tty_kref_put(tty); + tty_flip_buffer_push(&ifx_dev->tty_port); } /** diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index f60c4028b6e1..be26345bf6a4 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -518,7 +518,6 @@ static irqreturn_t imx_rxint(int irq, void *dev_id) unsigned int rx, flg, ignored = 0; struct tty_struct *tty = sport->port.state->port.tty; struct tty_port *port = &sport->port.state->port; - struct tty_struct *tty = port->tty; unsigned long flags, temp; spin_lock_irqsave(&sport->port.lock, flags); @@ -576,7 +575,7 @@ static irqreturn_t imx_rxint(int irq, void *dev_id) out: spin_unlock_irqrestore(&sport->port.lock, flags); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(port); return IRQ_HANDLED; } diff --git a/drivers/tty/serial/ioc3_serial.c b/drivers/tty/serial/ioc3_serial.c index edbdc4e45075..6e4c715c5d26 100644 --- a/drivers/tty/serial/ioc3_serial.c +++ b/drivers/tty/serial/ioc3_serial.c @@ -1393,7 +1393,6 @@ static inline int do_read(struct uart_port *the_port, char *buf, int len) */ static int receive_chars(struct uart_port *the_port) { - struct tty_struct *tty; unsigned char ch[MAX_CHARS]; int read_count = 0, read_room, flip = 0; struct uart_state *state = the_port->state; @@ -1403,14 +1402,11 @@ static int receive_chars(struct uart_port *the_port) /* Make sure all the pointers are "good" ones */ if (!state) return 0; - if (!state->port.tty) - return 0; if (!(port->ip_flags & INPUT_ENABLE)) return 0; spin_lock_irqsave(&the_port->lock, pflags); - tty = state->port.tty; read_count = do_read(the_port, ch, MAX_CHARS); if (read_count > 0) { @@ -1422,7 +1418,7 @@ static int receive_chars(struct uart_port *the_port) spin_unlock_irqrestore(&the_port->lock, pflags); if (flip) - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&state->port); return read_count; } diff --git a/drivers/tty/serial/ioc4_serial.c b/drivers/tty/serial/ioc4_serial.c index 86f64ed89b45..e2520abcb1c4 100644 --- a/drivers/tty/serial/ioc4_serial.c +++ b/drivers/tty/serial/ioc4_serial.c @@ -2340,7 +2340,6 @@ static inline int do_read(struct uart_port *the_port, unsigned char *buf, */ static void receive_chars(struct uart_port *the_port) { - struct tty_struct *tty; unsigned char ch[IOC4_MAX_CHARS]; int read_count, request_count = IOC4_MAX_CHARS; struct uart_icount *icount; @@ -2350,11 +2349,8 @@ static void receive_chars(struct uart_port *the_port) /* Make sure all the pointers are "good" ones */ if (!state) return; - if (!state->port.tty) - return; spin_lock_irqsave(&the_port->lock, pflags); - tty = state->port.tty; request_count = tty_buffer_request_room(&state->port, IOC4_MAX_CHARS); @@ -2369,7 +2365,7 @@ static void receive_chars(struct uart_port *the_port) spin_unlock_irqrestore(&the_port->lock, pflags); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&state->port); } /** diff --git a/drivers/tty/serial/jsm/jsm_tty.c b/drivers/tty/serial/jsm/jsm_tty.c index c9ce00dd1f8a..00f250ae14c5 100644 --- a/drivers/tty/serial/jsm/jsm_tty.c +++ b/drivers/tty/serial/jsm/jsm_tty.c @@ -654,7 +654,7 @@ void jsm_input(struct jsm_channel *ch) spin_unlock_irqrestore(&ch->ch_lock, lock_flags); /* Tell the tty layer its okay to "eat" the data now */ - tty_flip_buffer_push(tp); + tty_flip_buffer_push(port); jsm_dbg(IOCTL, &ch->ch_bd->pci_dev, "finish\n"); } diff --git a/drivers/tty/serial/kgdb_nmi.c b/drivers/tty/serial/kgdb_nmi.c index ba2ef627d9c6..26a50b0c868b 100644 --- a/drivers/tty/serial/kgdb_nmi.c +++ b/drivers/tty/serial/kgdb_nmi.c @@ -202,7 +202,6 @@ bool kgdb_nmi_poll_knock(void) static void kgdb_nmi_tty_receiver(unsigned long data) { struct kgdb_nmi_tty_priv *priv = (void *)data; - struct tty_struct *tty; char ch; tasklet_schedule(&priv->tlet); @@ -210,16 +209,9 @@ static void kgdb_nmi_tty_receiver(unsigned long data) if (likely(!kgdb_nmi_tty_enabled || !kfifo_len(&priv->fifo))) return; - /* Port is there, but tty might be hung up, check. */ - tty = tty_port_tty_get(kgdb_nmi_port); - if (!tty) - return; - while (kfifo_out(&priv->fifo, &ch, 1)) tty_insert_flip_char(&priv->port, ch, TTY_NORMAL); - tty_flip_buffer_push(priv->port.tty); - - tty_kref_put(tty); + tty_flip_buffer_push(&priv->port); } static int kgdb_nmi_tty_activate(struct tty_port *port, struct tty_struct *tty) diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c index 1933fe3c98dd..15733da757c6 100644 --- a/drivers/tty/serial/lantiq.c +++ b/drivers/tty/serial/lantiq.c @@ -163,21 +163,15 @@ static int lqasc_rx_chars(struct uart_port *port) { struct tty_port *tport = &port->state->port; - struct tty_struct *tty = tty_port_tty_get(tport); unsigned int ch = 0, rsr = 0, fifocnt; - if (!tty) { - dev_dbg(port->dev, "%s:tty is busy now", __func__); - return -EBUSY; - } - fifocnt = - ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_RXFFLMASK; + fifocnt = ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_RXFFLMASK; while (fifocnt--) { u8 flag = TTY_NORMAL; ch = ltq_r8(port->membase + LTQ_ASC_RBUF); rsr = (ltq_r32(port->membase + LTQ_ASC_STATE) & ASCSTATE_ANY) | UART_DUMMY_UER_RX; - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tport); port->icount.rx++; /* @@ -219,9 +213,10 @@ lqasc_rx_chars(struct uart_port *port) */ tty_insert_flip_char(tport, 0, TTY_OVERRUN); } + if (ch != 0) - tty_flip_buffer_push(tty); - tty_kref_put(tty); + tty_flip_buffer_push(tport); + return 0; } diff --git a/drivers/tty/serial/lpc32xx_hs.c b/drivers/tty/serial/lpc32xx_hs.c index 5cd180564c03..c8448e6f52e5 100644 --- a/drivers/tty/serial/lpc32xx_hs.c +++ b/drivers/tty/serial/lpc32xx_hs.c @@ -259,16 +259,6 @@ static void __serial_lpc32xx_rx(struct uart_port *port) { struct tty_port *tport = &port->state->port; unsigned int tmp, flag; - struct tty_struct *tty = tty_port_tty_get(tport); - - if (!tty) { - /* Discard data: no tty available */ - while (!(readl(LPC32XX_HSUART_FIFO(port->membase)) & - LPC32XX_HSU_RX_EMPTY)) - ; - - return; - } /* Read data from FIFO and push into terminal */ tmp = readl(LPC32XX_HSUART_FIFO(port->membase)); @@ -289,8 +279,7 @@ static void __serial_lpc32xx_rx(struct uart_port *port) tmp = readl(LPC32XX_HSUART_FIFO(port->membase)); } - tty_flip_buffer_push(tty); - tty_kref_put(tty); + tty_flip_buffer_push(tport); } static void __serial_lpc32xx_tx(struct uart_port *port) @@ -367,8 +356,7 @@ static irqreturn_t serial_lpc32xx_interrupt(int irq, void *dev_id) /* Data received? */ if (status & (LPC32XX_HSU_RX_TIMEOUT_INT | LPC32XX_HSU_RX_TRIG_INT)) { __serial_lpc32xx_rx(port); - if (tty) - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tport); } /* Transmit data request? */ diff --git a/drivers/tty/serial/m32r_sio.c b/drivers/tty/serial/m32r_sio.c index 2e9a390f2ac4..bb1afa0922e1 100644 --- a/drivers/tty/serial/m32r_sio.c +++ b/drivers/tty/serial/m32r_sio.c @@ -301,7 +301,6 @@ static void m32r_sio_enable_ms(struct uart_port *port) static void receive_chars(struct uart_sio_port *up, int *status) { struct tty_port *port = &up->port.state->port; - struct tty_struct *tty = tport->tty; unsigned char ch; unsigned char flag; int max_count = 256; @@ -369,7 +368,7 @@ static void receive_chars(struct uart_sio_port *up, int *status) ignore_char: *status = serial_in(up, UART_LSR); } while ((*status & UART_LSR_DR) && (max_count-- > 0)); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(port); } static void transmit_chars(struct uart_sio_port *up) diff --git a/drivers/tty/serial/max3100.c b/drivers/tty/serial/max3100.c index e238e80cd981..791e1dfb8b11 100644 --- a/drivers/tty/serial/max3100.c +++ b/drivers/tty/serial/max3100.c @@ -311,8 +311,8 @@ static void max3100_work(struct work_struct *w) } } - if (rxchars > 16 && s->port.state->port.tty != NULL) { - tty_flip_buffer_push(s->port.state->port.tty); + if (rxchars > 16) { + tty_flip_buffer_push(&s->port.state->port); rxchars = 0; } if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) @@ -324,8 +324,8 @@ static void max3100_work(struct work_struct *w) (!uart_circ_empty(xmit) && !uart_tx_stopped(&s->port)))); - if (rxchars > 0 && s->port.state->port.tty != NULL) - tty_flip_buffer_push(s->port.state->port.tty); + if (rxchars > 0) + tty_flip_buffer_push(&s->port.state->port); } static irqreturn_t max3100_irq(int irqno, void *dev_id) diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c index a801f6872cad..0c2422cb04ea 100644 --- a/drivers/tty/serial/max310x.c +++ b/drivers/tty/serial/max310x.c @@ -460,10 +460,6 @@ static int max310x_set_ref_clk(struct max310x_port *s) static void max310x_handle_rx(struct max310x_port *s, unsigned int rxlen) { unsigned int sts = 0, ch = 0, flag; - struct tty_struct *tty = tty_port_tty_get(&s->port.state->port); - - if (!tty) - return; if (unlikely(rxlen >= MAX310X_FIFO_SIZE)) { dev_warn(s->port.dev, "Possible RX FIFO overrun %d\n", rxlen); @@ -516,9 +512,7 @@ static void max310x_handle_rx(struct max310x_port *s, unsigned int rxlen) ch, flag); } - tty_flip_buffer_push(tty); - - tty_kref_put(tty); + tty_flip_buffer_push(&s->port.state->port); } static void max310x_handle_tx(struct max310x_port *s) diff --git a/drivers/tty/serial/mcf.c b/drivers/tty/serial/mcf.c index fcd56ab6053f..7ed99274572f 100644 --- a/drivers/tty/serial/mcf.c +++ b/drivers/tty/serial/mcf.c @@ -310,7 +310,7 @@ static void mcf_rx_chars(struct mcf_uart *pp) uart_insert_char(port, status, MCFUART_USR_RXOVERRUN, ch, flag); } - tty_flip_buffer_push(port->state->port.tty); + tty_flip_buffer_push(&port->state->port); } /****************************************************************************/ diff --git a/drivers/tty/serial/mfd.c b/drivers/tty/serial/mfd.c index 60d585ab4870..5f4765a7a5c5 100644 --- a/drivers/tty/serial/mfd.c +++ b/drivers/tty/serial/mfd.c @@ -388,12 +388,8 @@ void hsu_dma_rx(struct uart_hsu_port *up, u32 int_sts) struct hsu_dma_chan *chan = up->rxc; struct uart_port *port = &up->port; struct tty_port *tport = &port->state->port; - struct tty_struct *tty = tport->tty; int count; - if (!tty) - return; - /* * First need to know how many is already transferred, * then check if its a timeout DMA irq, and return @@ -438,7 +434,7 @@ void hsu_dma_rx(struct uart_hsu_port *up, u32 int_sts) | (0x1 << 16) | (0x1 << 24) /* timeout bit, see HSU Errata 1 */ ); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tport); chan_writel(chan, HSU_CH_CR, 0x3); @@ -461,13 +457,9 @@ static void serial_hsu_stop_rx(struct uart_port *port) static inline void receive_chars(struct uart_hsu_port *up, int *status) { - struct tty_struct *tty = up->port.state->port.tty; unsigned int ch, flag; unsigned int max_count = 256; - if (!tty) - return; - do { ch = serial_in(up, UART_RX); flag = TTY_NORMAL; @@ -523,7 +515,7 @@ static inline void receive_chars(struct uart_hsu_port *up, int *status) ignore_char: *status = serial_in(up, UART_LSR); } while ((*status & UART_LSR_DR) && max_count--); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&up->port.state->port); } static void transmit_chars(struct uart_hsu_port *up) diff --git a/drivers/tty/serial/mpc52xx_uart.c b/drivers/tty/serial/mpc52xx_uart.c index 0145aeb7721c..c0e1fad51be7 100644 --- a/drivers/tty/serial/mpc52xx_uart.c +++ b/drivers/tty/serial/mpc52xx_uart.c @@ -942,7 +942,6 @@ static inline int mpc52xx_uart_int_rx_chars(struct uart_port *port) { struct tty_port *tport = &port->state->port; - struct tty_struct *tty = tport->tty; unsigned char ch, flag; unsigned short status; @@ -1000,7 +999,7 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port) } spin_unlock(&port->lock); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tport); spin_lock(&port->lock); return psc_ops->raw_rx_rdy(port); diff --git a/drivers/tty/serial/mpsc.c b/drivers/tty/serial/mpsc.c index 6f2d2ceb326a..bc24f4931670 100644 --- a/drivers/tty/serial/mpsc.c +++ b/drivers/tty/serial/mpsc.c @@ -938,7 +938,6 @@ static int mpsc_rx_intr(struct mpsc_port_info *pi) { struct mpsc_rx_desc *rxre; struct tty_port *port = &pi->port.state->port; - struct tty_struct *tty = port->tty; u32 cmdstat, bytes_in, i; int rc = 0; u8 *bp; @@ -971,7 +970,7 @@ static int mpsc_rx_intr(struct mpsc_port_info *pi) /* Following use of tty struct directly is deprecated */ if (tty_buffer_request_room(port, bytes_in) < bytes_in) { if (port->low_latency) - tty_flip_buffer_push(tty); + tty_flip_buffer_push(port); /* * If this failed then we will throw away the bytes * but must do so to clear interrupts. @@ -1081,7 +1080,7 @@ next_frame: if ((readl(pi->sdma_base + SDMA_SDCM) & SDMA_SDCM_ERD) == 0) mpsc_start_rx(pi); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(port); return rc; } diff --git a/drivers/tty/serial/mrst_max3110.c b/drivers/tty/serial/mrst_max3110.c index 4632db7a24b7..f641c232beca 100644 --- a/drivers/tty/serial/mrst_max3110.c +++ b/drivers/tty/serial/mrst_max3110.c @@ -340,7 +340,6 @@ receive_chars(struct uart_max3110 *max, unsigned short *str, int len) { struct uart_port *port = &max->port; struct tty_port *tport; - struct tty_struct *tty; char buf[M3110_RX_FIFO_DEPTH]; int r, w, usable; @@ -349,9 +348,6 @@ receive_chars(struct uart_max3110 *max, unsigned short *str, int len) return 0; tport = &port->state->port; - tty = tty_port_tty_get(tport); - if (!tty) - return 0; for (r = 0, w = 0; r < len; r++) { if (str[r] & MAX3110_BREAK && @@ -366,10 +362,8 @@ receive_chars(struct uart_max3110 *max, unsigned short *str, int len) } } - if (!w) { - tty_kref_put(tty); + if (!w) return 0; - } for (r = 0; w; r += usable, w -= usable) { usable = tty_buffer_request_room(tport, w); @@ -378,8 +372,7 @@ receive_chars(struct uart_max3110 *max, unsigned short *str, int len) port->icount.rx += usable; } } - tty_flip_buffer_push(tty); - tty_kref_put(tty); + tty_flip_buffer_push(tport); return r; } diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c index cb787c0e279a..b11e99797fd8 100644 --- a/drivers/tty/serial/msm_serial.c +++ b/drivers/tty/serial/msm_serial.c @@ -92,7 +92,6 @@ static void msm_enable_ms(struct uart_port *port) static void handle_rx_dm(struct uart_port *port, unsigned int misr) { struct tty_port *tport = &port->state->port; - struct tty_struct *tty = tport->tty; unsigned int sr; int count = 0; struct msm_port *msm_port = UART_TO_MSM(port); @@ -138,7 +137,7 @@ static void handle_rx_dm(struct uart_port *port, unsigned int misr) count -= 4; } - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tport); if (misr & (UART_IMR_RXSTALE)) msm_write(port, UART_CR_CMD_RESET_STALE_INT, UART_CR); msm_write(port, 0xFFFFFF, UARTDM_DMRX); @@ -148,7 +147,6 @@ static void handle_rx_dm(struct uart_port *port, unsigned int misr) static void handle_rx(struct uart_port *port) { struct tty_port *tport = &port->state->port; - struct tty_struct *tty = tport->tty; unsigned int sr; /* @@ -191,7 +189,7 @@ static void handle_rx(struct uart_port *port) tty_insert_flip_char(tport, c, flag); } - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tport); } static void reset_dm_count(struct uart_port *port) diff --git a/drivers/tty/serial/msm_serial_hs.c b/drivers/tty/serial/msm_serial_hs.c index c356ffff3c71..4a942c78347e 100644 --- a/drivers/tty/serial/msm_serial_hs.c +++ b/drivers/tty/serial/msm_serial_hs.c @@ -981,9 +981,8 @@ static void msm_hs_tty_flip_buffer_work(struct work_struct *work) { struct msm_hs_port *msm_uport = container_of(work, struct msm_hs_port, rx.tty_work); - struct tty_struct *tty = msm_uport->uport.state->port.tty; - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&msm_uport->uport.state->port); } /* diff --git a/drivers/tty/serial/msm_smd_tty.c b/drivers/tty/serial/msm_smd_tty.c index b43b4ec39269..e722ff163d91 100644 --- a/drivers/tty/serial/msm_smd_tty.c +++ b/drivers/tty/serial/msm_smd_tty.c @@ -80,7 +80,7 @@ static void smd_tty_notify(void *priv, unsigned event) pr_err("OOPS - smd_tty_buffer mismatch?!"); } - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&info->port); } /* XXX only when writable and necessary */ diff --git a/drivers/tty/serial/mux.c b/drivers/tty/serial/mux.c index 83b21686020e..7fd6aaaacd8e 100644 --- a/drivers/tty/serial/mux.c +++ b/drivers/tty/serial/mux.c @@ -244,7 +244,6 @@ static void mux_read(struct uart_port *port) { struct tty_port *tport = &port->state->port; int data; - struct tty_struct *tty = tport->tty; __u32 start_count = port->icount.rx; while(1) { @@ -270,9 +269,8 @@ static void mux_read(struct uart_port *port) tty_insert_flip_char(tport, data & 0xFF, TTY_NORMAL); } - if (start_count != port->icount.rx) { - tty_flip_buffer_push(tty); - } + if (start_count != port->icount.rx) + tty_flip_buffer_push(tport); } /** diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c index 37a0046ef531..df0ba32f88ad 100644 --- a/drivers/tty/serial/mxs-auart.c +++ b/drivers/tty/serial/mxs-auart.c @@ -364,7 +364,6 @@ out: static void mxs_auart_rx_chars(struct mxs_auart_port *s) { - struct tty_struct *tty = s->port.state->port.tty; u32 stat = 0; for (;;) { @@ -375,7 +374,7 @@ static void mxs_auart_rx_chars(struct mxs_auart_port *s) } writel(stat, s->port.membase + AUART_STAT); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&s->port.state->port); } static int mxs_auart_request_port(struct uart_port *u) @@ -458,7 +457,6 @@ static void dma_rx_callback(void *arg) { struct mxs_auart_port *s = (struct mxs_auart_port *) arg; struct tty_port *port = &s->port.state->port; - struct tty_struct *tty = port->tty; int count; u32 stat; @@ -472,7 +470,7 @@ static void dma_rx_callback(void *arg) tty_insert_flip_string(port, s->rx_dma_buf, count); writel(stat, s->port.membase + AUART_STAT); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(port); /* start the next DMA for RX. */ mxs_auart_dma_prep_rx(s); diff --git a/drivers/tty/serial/netx-serial.c b/drivers/tty/serial/netx-serial.c index d40da78e7c85..b9a40ed70be2 100644 --- a/drivers/tty/serial/netx-serial.c +++ b/drivers/tty/serial/netx-serial.c @@ -199,7 +199,6 @@ static void netx_txint(struct uart_port *port) static void netx_rxint(struct uart_port *port) { unsigned char rx, flg, status; - struct tty_struct *tty = port->state->port.tty; while (!(readl(port->membase + UART_FR) & FR_RXFE)) { rx = readl(port->membase + UART_DR); @@ -237,8 +236,7 @@ static void netx_rxint(struct uart_port *port) uart_insert_char(port, status, SR_OE, rx, flg); } - tty_flip_buffer_push(tty); - return; + tty_flip_buffer_push(&port->state->port); } static irqreturn_t netx_int(int irq, void *dev_id) diff --git a/drivers/tty/serial/nwpserial.c b/drivers/tty/serial/nwpserial.c index 10d64a3697fb..77287c54f331 100644 --- a/drivers/tty/serial/nwpserial.c +++ b/drivers/tty/serial/nwpserial.c @@ -129,7 +129,6 @@ static irqreturn_t nwpserial_interrupt(int irq, void *dev_id) { struct nwpserial_port *up = dev_id; struct tty_port *port = &up->port.state->port; - struct tty_struct *tty = port->tty; irqreturn_t ret; unsigned int iir; unsigned char ch; @@ -150,7 +149,7 @@ static irqreturn_t nwpserial_interrupt(int irq, void *dev_id) tty_insert_flip_char(port, ch, TTY_NORMAL); } while (dcr_read(up->dcr_host, UART_LSR) & UART_LSR_DR); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(port); ret = IRQ_HANDLED; /* clear interrupt */ diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index ec90651d661a..6f3dbf740f05 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -483,7 +483,6 @@ static void serial_omap_rdi(struct uart_omap_port *up, unsigned int lsr) static irqreturn_t serial_omap_irq(int irq, void *dev_id) { struct uart_omap_port *up = dev_id; - struct tty_struct *tty = up->port.state->port.tty; unsigned int iir, lsr; unsigned int type; irqreturn_t ret = IRQ_NONE; @@ -530,7 +529,7 @@ static irqreturn_t serial_omap_irq(int irq, void *dev_id) spin_unlock(&up->port.lock); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&up->port.state->port); pm_runtime_mark_last_busy(up->dev); pm_runtime_put_autosuspend(up->dev); diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index 967f1cb311f3..8b40a1fc9681 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -593,17 +593,9 @@ static int push_rx(struct eg20t_port *priv, const unsigned char *buf, { struct uart_port *port = &priv->port; struct tty_port *tport = &port->state->port; - struct tty_struct *tty; - - tty = tty_port_tty_get(tport); - if (!tty) { - dev_dbg(priv->port.dev, "%s:tty is busy now", __func__); - return -EBUSY; - } tty_insert_flip_string(tport, buf, size); - tty_flip_buffer_push(tty); - tty_kref_put(tty); + tty_flip_buffer_push(tport); return 0; } @@ -744,19 +736,12 @@ static void pch_dma_rx_complete(void *arg) { struct eg20t_port *priv = arg; struct uart_port *port = &priv->port; - struct tty_struct *tty = tty_port_tty_get(&port->state->port); int count; - if (!tty) { - dev_dbg(priv->port.dev, "%s:tty is busy now", __func__); - return; - } - dma_sync_sg_for_cpu(port->dev, &priv->sg_rx, 1, DMA_FROM_DEVICE); count = dma_push_rx(priv, priv->trigger_level); if (count) - tty_flip_buffer_push(tty); - tty_kref_put(tty); + tty_flip_buffer_push(&port->state->port); async_tx_ack(priv->desc_rx); pch_uart_hal_enable_interrupt(priv, PCH_UART_HAL_RX_INT | PCH_UART_HAL_RX_ERR_INT); diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c index 73a3f295e7c4..b1785f58b6e3 100644 --- a/drivers/tty/serial/pmac_zilog.c +++ b/drivers/tty/serial/pmac_zilog.c @@ -227,21 +227,19 @@ static void pmz_interrupt_control(struct uart_pmac_port *uap, int enable) write_zsreg(uap, R1, uap->curregs[1]); } -static struct tty_struct *pmz_receive_chars(struct uart_pmac_port *uap) +static bool pmz_receive_chars(struct uart_pmac_port *uap) { struct tty_port *port; - struct tty_struct *tty = NULL; unsigned char ch, r1, drop, error, flag; int loops = 0; /* Sanity check, make sure the old bug is no longer happening */ - if (uap->port.state == NULL || uap->port.state->port.tty == NULL) { + if (uap->port.state == NULL) { WARN_ON(1); (void)read_zsdata(uap); - return NULL; + return false; } port = &uap->port.state->port; - tty = port->tty; /* TOCTOU above */ while (1) { error = 0; @@ -330,11 +328,11 @@ static struct tty_struct *pmz_receive_chars(struct uart_pmac_port *uap) break; } - return tty; + return true; flood: pmz_interrupt_control(uap, 0); pmz_error("pmz: rx irq flood !\n"); - return tty; + return true; } static void pmz_status_handle(struct uart_pmac_port *uap) @@ -455,7 +453,7 @@ static irqreturn_t pmz_interrupt(int irq, void *dev_id) struct uart_pmac_port *uap_a; struct uart_pmac_port *uap_b; int rc = IRQ_NONE; - struct tty_struct *tty; + bool push; u8 r3; uap_a = pmz_get_port_A(uap); @@ -468,7 +466,7 @@ static irqreturn_t pmz_interrupt(int irq, void *dev_id) pmz_debug("irq, r3: %x\n", r3); #endif /* Channel A */ - tty = NULL; + push = false; if (r3 & (CHAEXT | CHATxIP | CHARxIP)) { if (!ZS_IS_OPEN(uap_a)) { pmz_debug("ChanA interrupt while not open !\n"); @@ -479,21 +477,21 @@ static irqreturn_t pmz_interrupt(int irq, void *dev_id) if (r3 & CHAEXT) pmz_status_handle(uap_a); if (r3 & CHARxIP) - tty = pmz_receive_chars(uap_a); + push = pmz_receive_chars(uap_a); if (r3 & CHATxIP) pmz_transmit_chars(uap_a); rc = IRQ_HANDLED; } skip_a: spin_unlock(&uap_a->port.lock); - if (tty != NULL) - tty_flip_buffer_push(tty); + if (push) + tty_flip_buffer_push(&uap->port.state->port); if (!uap_b) goto out; spin_lock(&uap_b->port.lock); - tty = NULL; + push = false; if (r3 & (CHBEXT | CHBTxIP | CHBRxIP)) { if (!ZS_IS_OPEN(uap_b)) { pmz_debug("ChanB interrupt while not open !\n"); @@ -504,15 +502,15 @@ static irqreturn_t pmz_interrupt(int irq, void *dev_id) if (r3 & CHBEXT) pmz_status_handle(uap_b); if (r3 & CHBRxIP) - tty = pmz_receive_chars(uap_b); + push = pmz_receive_chars(uap_b); if (r3 & CHBTxIP) pmz_transmit_chars(uap_b); rc = IRQ_HANDLED; } skip_b: spin_unlock(&uap_b->port.lock); - if (tty != NULL) - tty_flip_buffer_push(tty); + if (push) + tty_flip_buffer_push(&uap->port.state->port); out: return rc; diff --git a/drivers/tty/serial/pnx8xxx_uart.c b/drivers/tty/serial/pnx8xxx_uart.c index 0aa75a97531c..7e277a5384a7 100644 --- a/drivers/tty/serial/pnx8xxx_uart.c +++ b/drivers/tty/serial/pnx8xxx_uart.c @@ -181,7 +181,6 @@ static void pnx8xxx_enable_ms(struct uart_port *port) static void pnx8xxx_rx_chars(struct pnx8xxx_port *sport) { - struct tty_struct *tty = sport->port.state->port.tty; unsigned int status, ch, flg; status = FIFO_TO_SM(serial_in(sport, PNX8XXX_FIFO)) | @@ -238,7 +237,7 @@ static void pnx8xxx_rx_chars(struct pnx8xxx_port *sport) status = FIFO_TO_SM(serial_in(sport, PNX8XXX_FIFO)) | ISTAT_TO_SM(serial_in(sport, PNX8XXX_ISTAT)); } - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&sport->port.state->port); } static void pnx8xxx_tx_chars(struct pnx8xxx_port *sport) diff --git a/drivers/tty/serial/pxa.c b/drivers/tty/serial/pxa.c index 2764828251f5..3b671bc3f966 100644 --- a/drivers/tty/serial/pxa.c +++ b/drivers/tty/serial/pxa.c @@ -98,7 +98,6 @@ static void serial_pxa_stop_rx(struct uart_port *port) static inline void receive_chars(struct uart_pxa_port *up, int *status) { - struct tty_struct *tty = up->port.state->port.tty; unsigned int ch, flag; int max_count = 256; @@ -168,7 +167,7 @@ static inline void receive_chars(struct uart_pxa_port *up, int *status) ignore_char: *status = serial_in(up, UART_LSR); } while ((*status & UART_LSR_DR) && (max_count-- > 0)); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&up->port.state->port); /* work around Errata #20 according to * Intel(R) PXA27x Processor Family diff --git a/drivers/tty/serial/sa1100.c b/drivers/tty/serial/sa1100.c index 5d4b9b449b4a..af6b3e3ad24d 100644 --- a/drivers/tty/serial/sa1100.c +++ b/drivers/tty/serial/sa1100.c @@ -188,7 +188,6 @@ static void sa1100_enable_ms(struct uart_port *port) static void sa1100_rx_chars(struct sa1100_port *sport) { - struct tty_struct *tty = sport->port.state->port.tty; unsigned int status, ch, flg; status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) | @@ -233,7 +232,7 @@ sa1100_rx_chars(struct sa1100_port *sport) status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) | UTSR0_TO_SM(UART_GET_UTSR0(sport)); } - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&sport->port.state->port); } static void sa1100_tx_chars(struct sa1100_port *sport) diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index 0684529eb2ad..3aa3c4c83f8b 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -220,7 +220,6 @@ s3c24xx_serial_rx_chars(int irq, void *dev_id) { struct s3c24xx_uart_port *ourport = dev_id; struct uart_port *port = &ourport->port; - struct tty_struct *tty = port->state->port.tty; unsigned int ufcon, ch, flag, ufstat, uerstat; unsigned long flags; int max_count = 64; @@ -298,7 +297,7 @@ s3c24xx_serial_rx_chars(int irq, void *dev_id) ignore_char: continue; } - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&port->state->port); out: spin_unlock_irqrestore(&port->lock, flags); diff --git a/drivers/tty/serial/sb1250-duart.c b/drivers/tty/serial/sb1250-duart.c index f76b1688c5c8..a7cdec2962dd 100644 --- a/drivers/tty/serial/sb1250-duart.c +++ b/drivers/tty/serial/sb1250-duart.c @@ -384,7 +384,7 @@ static void sbd_receive_chars(struct sbd_port *sport) uart_insert_char(uport, status, M_DUART_OVRUN_ERR, ch, flag); } - tty_flip_buffer_push(uport->state->port.tty); + tty_flip_buffer_push(&uport->state->port); } static void sbd_transmit_chars(struct sbd_port *sport) diff --git a/drivers/tty/serial/sc26xx.c b/drivers/tty/serial/sc26xx.c index 0cd0e4ac12a6..c9735680762d 100644 --- a/drivers/tty/serial/sc26xx.c +++ b/drivers/tty/serial/sc26xx.c @@ -136,20 +136,17 @@ static void sc26xx_disable_irq(struct uart_port *port, int mask) WRITE_SC(port, IMR, up->imr); } -static struct tty_struct *receive_chars(struct uart_port *port) +static bool receive_chars(struct uart_port *port) { struct tty_port *tport = NULL; - struct tty_struct *tty = NULL; int limit = 10000; unsigned char ch; char flag; u8 status; /* FIXME what is this trying to achieve? */ - if (port->state != NULL) { /* Unopened serial console */ + if (port->state != NULL) /* Unopened serial console */ tport = &port->state->port; - tty = tport->tty; - } while (limit-- > 0) { status = READ_SC_PORT(port, SR); @@ -191,7 +188,7 @@ static struct tty_struct *receive_chars(struct uart_port *port) tty_insert_flip_char(tport, ch, flag); } - return tty; + return !!tport; } static void transmit_chars(struct uart_port *port) @@ -221,36 +218,36 @@ static void transmit_chars(struct uart_port *port) static irqreturn_t sc26xx_interrupt(int irq, void *dev_id) { struct uart_sc26xx_port *up = dev_id; - struct tty_struct *tty; unsigned long flags; + bool push; u8 isr; spin_lock_irqsave(&up->port[0].lock, flags); - tty = NULL; + push = false; isr = READ_SC(&up->port[0], ISR); if (isr & ISR_TXRDYA) transmit_chars(&up->port[0]); if (isr & ISR_RXRDYA) - tty = receive_chars(&up->port[0]); + push = receive_chars(&up->port[0]); spin_unlock(&up->port[0].lock); - if (tty) - tty_flip_buffer_push(tty); + if (push) + tty_flip_buffer_push(&up->port[0].state->port); spin_lock(&up->port[1].lock); - tty = NULL; + push = false; if (isr & ISR_TXRDYB) transmit_chars(&up->port[1]); if (isr & ISR_RXRDYB) - tty = receive_chars(&up->port[1]); + push = receive_chars(&up->port[1]); spin_unlock_irqrestore(&up->port[1].lock, flags); - if (tty) - tty_flip_buffer_push(tty); + if (push) + tty_flip_buffer_push(&up->port[1].state->port); return IRQ_HANDLED; } diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c index 418b495e3233..2ced871becff 100644 --- a/drivers/tty/serial/sccnxp.c +++ b/drivers/tty/serial/sccnxp.c @@ -285,10 +285,6 @@ static void sccnxp_handle_rx(struct uart_port *port) { u8 sr; unsigned int ch, flag; - struct tty_struct *tty = tty_port_tty_get(&port->state->port); - - if (!tty) - return; for (;;) { sr = sccnxp_port_read(port, SCCNXP_SR_REG); @@ -333,9 +329,7 @@ static void sccnxp_handle_rx(struct uart_port *port) uart_insert_char(port, sr, SR_OVR, ch, flag); } - tty_flip_buffer_push(tty); - - tty_kref_put(tty); + tty_flip_buffer_push(&port->state->port); } static void sccnxp_handle_tx(struct uart_port *port) diff --git a/drivers/tty/serial/serial_ks8695.c b/drivers/tty/serial/serial_ks8695.c index 9bd004f9da89..e1caa99e3d3b 100644 --- a/drivers/tty/serial/serial_ks8695.c +++ b/drivers/tty/serial/serial_ks8695.c @@ -153,7 +153,6 @@ static void ks8695uart_disable_ms(struct uart_port *port) static irqreturn_t ks8695uart_rx_chars(int irq, void *dev_id) { struct uart_port *port = dev_id; - struct tty_struct *tty = port->state->port.tty; unsigned int status, ch, lsr, flg, max_count = 256; status = UART_GET_LSR(port); /* clears pending LSR interrupts */ @@ -200,7 +199,7 @@ static irqreturn_t ks8695uart_rx_chars(int irq, void *dev_id) ignore_char: status = UART_GET_LSR(port); } - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&port->state->port); return IRQ_HANDLED; } diff --git a/drivers/tty/serial/serial_txx9.c b/drivers/tty/serial/serial_txx9.c index b52b21aeb250..fe48a0c2b4ca 100644 --- a/drivers/tty/serial/serial_txx9.c +++ b/drivers/tty/serial/serial_txx9.c @@ -277,7 +277,6 @@ static void serial_txx9_initialize(struct uart_port *port) static inline void receive_chars(struct uart_txx9_port *up, unsigned int *status) { - struct tty_struct *tty = up->port.state->port.tty; unsigned char ch; unsigned int disr = *status; int max_count = 256; @@ -346,7 +345,7 @@ receive_chars(struct uart_txx9_port *up, unsigned int *status) disr = sio_in(up, TXX9_SIDISR); } while (!(disr & TXX9_SIDISR_UVALID) && (max_count-- > 0)); spin_unlock(&up->port.lock); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&up->port.state->port); spin_lock(&up->port.lock); *status = disr; } diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index ecef748f5385..156418619949 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -597,7 +597,6 @@ static void sci_receive_chars(struct uart_port *port) { struct sci_port *sci_port = to_sci_port(port); struct tty_port *tport = &port->state->port; - struct tty_struct *tty = tport->tty; int i, count, copied = 0; unsigned short status; unsigned char flag; @@ -675,7 +674,7 @@ static void sci_receive_chars(struct uart_port *port) if (copied) { /* Tell the rest of the system the news. New characters! */ - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tport); } else { serial_port_in(port, SCxSR); /* dummy read */ serial_port_out(port, SCxSR, SCxSR_RDxF_CLEAR(port)); @@ -722,7 +721,6 @@ static int sci_handle_errors(struct uart_port *port) int copied = 0; unsigned short status = serial_port_in(port, SCxSR); struct tty_port *tport = &port->state->port; - struct tty_struct *tty = tport->tty; struct sci_port *s = to_sci_port(port); /* @@ -783,7 +781,7 @@ static int sci_handle_errors(struct uart_port *port) } if (copied) - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tport); return copied; } @@ -791,7 +789,6 @@ static int sci_handle_errors(struct uart_port *port) static int sci_handle_fifo_overrun(struct uart_port *port) { struct tty_port *tport = &port->state->port; - struct tty_struct *tty = tport->tty; struct sci_port *s = to_sci_port(port); struct plat_sci_reg *reg; int copied = 0; @@ -806,7 +803,7 @@ static int sci_handle_fifo_overrun(struct uart_port *port) port->icount.overrun++; tty_insert_flip_char(tport, 0, TTY_OVERRUN); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tport); dev_notice(port->dev, "overrun error\n"); copied++; @@ -820,7 +817,6 @@ static int sci_handle_breaks(struct uart_port *port) int copied = 0; unsigned short status = serial_port_in(port, SCxSR); struct tty_port *tport = &port->state->port; - struct tty_struct *tty = tport->tty; struct sci_port *s = to_sci_port(port); if (uart_handle_break(port)) @@ -842,7 +838,7 @@ static int sci_handle_breaks(struct uart_port *port) } if (copied) - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tport); copied += sci_handle_fifo_overrun(port); @@ -1299,7 +1295,6 @@ static void sci_dma_rx_complete(void *arg) { struct sci_port *s = arg; struct uart_port *port = &s->port; - struct tty_struct *tty = port->state->port.tty; unsigned long flags; int count; @@ -1314,7 +1309,7 @@ static void sci_dma_rx_complete(void *arg) spin_unlock_irqrestore(&port->lock, flags); if (count) - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&port->state->port); schedule_work(&s->work_rx); } @@ -1408,7 +1403,6 @@ static void work_fn_rx(struct work_struct *work) if (dma_async_is_tx_complete(s->chan_rx, s->active_rx, NULL, NULL) != DMA_SUCCESS) { /* Handle incomplete DMA receive */ - struct tty_struct *tty = port->state->port.tty; struct dma_chan *chan = s->chan_rx; struct shdma_desc *sh_desc = container_of(desc, struct shdma_desc, async_tx); @@ -1424,7 +1418,7 @@ static void work_fn_rx(struct work_struct *work) spin_unlock_irqrestore(&port->lock, flags); if (count) - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&port->state->port); sci_submit_rx(s); diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c index 142217cd01f4..8f3d6c091acc 100644 --- a/drivers/tty/serial/sirfsoc_uart.c +++ b/drivers/tty/serial/sirfsoc_uart.c @@ -206,11 +206,6 @@ static unsigned int sirfsoc_uart_pio_rx_chars(struct uart_port *port, unsigned int max_rx_count) { unsigned int ch, rx_count = 0; - struct tty_struct *tty; - - tty = tty_port_tty_get(&port->state->port); - if (!tty) - return -ENODEV; while (!(rd_regl(port, SIRFUART_RX_FIFO_STATUS) & SIRFUART_FIFOEMPTY_MASK(port))) { @@ -224,8 +219,7 @@ sirfsoc_uart_pio_rx_chars(struct uart_port *port, unsigned int max_rx_count) } port->icount.rx += rx_count; - tty_flip_buffer_push(tty); - tty_kref_put(tty); + tty_flip_buffer_push(&port->state->port); return rx_count; } diff --git a/drivers/tty/serial/sn_console.c b/drivers/tty/serial/sn_console.c index 283232c64656..f51ffdc696fd 100644 --- a/drivers/tty/serial/sn_console.c +++ b/drivers/tty/serial/sn_console.c @@ -459,7 +459,6 @@ sn_receive_chars(struct sn_cons_port *port, unsigned long flags) { struct tty_port *tport = NULL; int ch; - struct tty_struct *tty; if (!port) { printk(KERN_ERR "sn_receive_chars - port NULL so can't receive\n"); @@ -474,11 +473,6 @@ sn_receive_chars(struct sn_cons_port *port, unsigned long flags) if (port->sc_port.state) { /* The serial_core stuffs are initialized, use them */ tport = &port->sc_port.state->port; - tty = tport->tty; - } - else { - /* Not registered yet - can't pass to tty layer. */ - tty = NULL; } while (port->sc_ops->sal_input_pending()) { @@ -518,15 +512,15 @@ sn_receive_chars(struct sn_cons_port *port, unsigned long flags) #endif /* CONFIG_MAGIC_SYSRQ */ /* record the character to pass up to the tty layer */ - if (tty) { + if (tport) { if (tty_insert_flip_char(tport, ch, TTY_NORMAL) == 0) break; } port->sc_port.icount.rx++; } - if (tty) - tty_flip_buffer_push(tty); + if (tport) + tty_flip_buffer_push(tport); } /** diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c index defe92b19e16..ba60708053e0 100644 --- a/drivers/tty/serial/sunhv.c +++ b/drivers/tty/serial/sunhv.c @@ -181,17 +181,17 @@ static struct sunhv_ops bywrite_ops = { static struct sunhv_ops *sunhv_ops = &bychar_ops; -static struct tty_struct *receive_chars(struct uart_port *port) +static struct tty_port *receive_chars(struct uart_port *port) { - struct tty_struct *tty = NULL; + struct tty_port *tport = NULL; if (port->state != NULL) /* Unopened serial console */ - tty = port->state->port.tty; + tport = &port->state->port; if (sunhv_ops->receive_chars(port)) sun_do_break(); - return tty; + return tport; } static void transmit_chars(struct uart_port *port) @@ -214,16 +214,16 @@ static void transmit_chars(struct uart_port *port) static irqreturn_t sunhv_interrupt(int irq, void *dev_id) { struct uart_port *port = dev_id; - struct tty_struct *tty; + struct tty_port *tport; unsigned long flags; spin_lock_irqsave(&port->lock, flags); - tty = receive_chars(port); + tport = receive_chars(port); transmit_chars(port); spin_unlock_irqrestore(&port->lock, flags); - if (tty) - tty_flip_buffer_push(tty); + if (tport) + tty_flip_buffer_push(tport); return IRQ_HANDLED; } diff --git a/drivers/tty/serial/sunsab.c b/drivers/tty/serial/sunsab.c index 4abc4d43a8e8..8de2213664e0 100644 --- a/drivers/tty/serial/sunsab.c +++ b/drivers/tty/serial/sunsab.c @@ -107,22 +107,19 @@ static __inline__ void sunsab_cec_wait(struct uart_sunsab_port *up) udelay(1); } -static struct tty_struct * +static struct tty_port * receive_chars(struct uart_sunsab_port *up, union sab82532_irq_status *stat) { struct tty_port *port = NULL; - struct tty_struct *tty = NULL; unsigned char buf[32]; int saw_console_brk = 0; int free_fifo = 0; int count = 0; int i; - if (up->port.state != NULL) { /* Unopened serial console */ + if (up->port.state != NULL) /* Unopened serial console */ port = &up->port.state->port; - tty = port->tty; - } /* Read number of BYTES (Character + Status) available. */ if (stat->sreg.isr0 & SAB82532_ISR0_RPF) { @@ -139,7 +136,7 @@ receive_chars(struct uart_sunsab_port *up, if (stat->sreg.isr0 & SAB82532_ISR0_TIME) { sunsab_cec_wait(up); writeb(SAB82532_CMDR_RFRD, &up->regs->w.cmdr); - return tty; + return port; } if (stat->sreg.isr0 & SAB82532_ISR0_RFO) @@ -219,7 +216,7 @@ receive_chars(struct uart_sunsab_port *up, if (saw_console_brk) sun_do_break(); - return tty; + return port; } static void sunsab_stop_tx(struct uart_port *); @@ -302,7 +299,7 @@ static void check_status(struct uart_sunsab_port *up, static irqreturn_t sunsab_interrupt(int irq, void *dev_id) { struct uart_sunsab_port *up = dev_id; - struct tty_struct *tty; + struct tty_port *port = NULL; union sab82532_irq_status status; unsigned long flags; unsigned char gis; @@ -316,12 +313,11 @@ static irqreturn_t sunsab_interrupt(int irq, void *dev_id) if (gis & 2) status.sreg.isr1 = readb(&up->regs->r.isr1); - tty = NULL; if (status.stat) { if ((status.sreg.isr0 & (SAB82532_ISR0_TCD | SAB82532_ISR0_TIME | SAB82532_ISR0_RFO | SAB82532_ISR0_RPF)) || (status.sreg.isr1 & SAB82532_ISR1_BRK)) - tty = receive_chars(up, &status); + port = receive_chars(up, &status); if ((status.sreg.isr0 & SAB82532_ISR0_CDSC) || (status.sreg.isr1 & SAB82532_ISR1_CSC)) check_status(up, &status); @@ -331,8 +327,8 @@ static irqreturn_t sunsab_interrupt(int irq, void *dev_id) spin_unlock_irqrestore(&up->port.lock, flags); - if (tty) - tty_flip_buffer_push(tty); + if (port) + tty_flip_buffer_push(port); return IRQ_HANDLED; } diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c index 52325968b06c..e343d6670854 100644 --- a/drivers/tty/serial/sunsu.c +++ b/drivers/tty/serial/sunsu.c @@ -315,11 +315,10 @@ static void sunsu_enable_ms(struct uart_port *port) spin_unlock_irqrestore(&up->port.lock, flags); } -static struct tty_struct * +static void receive_chars(struct uart_sunsu_port *up, unsigned char *status) { struct tty_port *port = &up->port.state->port; - struct tty_struct *tty = port->tty; unsigned char ch, flag; int max_count = 256; int saw_console_brk = 0; @@ -391,8 +390,6 @@ receive_chars(struct uart_sunsu_port *up, unsigned char *status) if (saw_console_brk) sun_do_break(); - - return tty; } static void transmit_chars(struct uart_sunsu_port *up) @@ -461,20 +458,16 @@ static irqreturn_t sunsu_serial_interrupt(int irq, void *dev_id) spin_lock_irqsave(&up->port.lock, flags); do { - struct tty_struct *tty; - status = serial_inp(up, UART_LSR); - tty = NULL; if (status & UART_LSR_DR) - tty = receive_chars(up, &status); + receive_chars(up, &status); check_modem_status(up); if (status & UART_LSR_THRE) transmit_chars(up); spin_unlock_irqrestore(&up->port.lock, flags); - if (tty) - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&up->port.state->port); spin_lock_irqsave(&up->port.lock, flags); diff --git a/drivers/tty/serial/sunzilog.c b/drivers/tty/serial/sunzilog.c index 4a11be3849f6..27669ff3d446 100644 --- a/drivers/tty/serial/sunzilog.c +++ b/drivers/tty/serial/sunzilog.c @@ -323,19 +323,15 @@ static void sunzilog_kbdms_receive_chars(struct uart_sunzilog_port *up, } } -static struct tty_struct * +static struct tty_port * sunzilog_receive_chars(struct uart_sunzilog_port *up, struct zilog_channel __iomem *channel) { struct tty_port *port = NULL; - struct tty_struct *tty; unsigned char ch, r1, flag; - tty = NULL; - if (up->port.state != NULL) { /* Unopened serial console */ + if (up->port.state != NULL) /* Unopened serial console */ port = &up->port.state->port; - tty = port->tty; /* mouse => tty is NULL */ - } for (;;) { @@ -403,7 +399,7 @@ sunzilog_receive_chars(struct uart_sunzilog_port *up, tty_insert_flip_char(port, 0, TTY_OVERRUN); } - return tty; + return port; } static void sunzilog_status_handle(struct uart_sunzilog_port *up, @@ -536,21 +532,21 @@ static irqreturn_t sunzilog_interrupt(int irq, void *dev_id) while (up) { struct zilog_channel __iomem *channel = ZILOG_CHANNEL_FROM_PORT(&up->port); - struct tty_struct *tty; + struct tty_port *port; unsigned char r3; spin_lock(&up->port.lock); r3 = read_zsreg(channel, R3); /* Channel A */ - tty = NULL; + port = NULL; if (r3 & (CHAEXT | CHATxIP | CHARxIP)) { writeb(RES_H_IUS, &channel->control); ZSDELAY(); ZS_WSYNC(channel); if (r3 & CHARxIP) - tty = sunzilog_receive_chars(up, channel); + port = sunzilog_receive_chars(up, channel); if (r3 & CHAEXT) sunzilog_status_handle(up, channel); if (r3 & CHATxIP) @@ -558,22 +554,22 @@ static irqreturn_t sunzilog_interrupt(int irq, void *dev_id) } spin_unlock(&up->port.lock); - if (tty) - tty_flip_buffer_push(tty); + if (port) + tty_flip_buffer_push(port); /* Channel B */ up = up->next; channel = ZILOG_CHANNEL_FROM_PORT(&up->port); spin_lock(&up->port.lock); - tty = NULL; + port = NULL; if (r3 & (CHBEXT | CHBTxIP | CHBRxIP)) { writeb(RES_H_IUS, &channel->control); ZSDELAY(); ZS_WSYNC(channel); if (r3 & CHBRxIP) - tty = sunzilog_receive_chars(up, channel); + port = sunzilog_receive_chars(up, channel); if (r3 & CHBEXT) sunzilog_status_handle(up, channel); if (r3 & CHBTxIP) @@ -581,8 +577,8 @@ static irqreturn_t sunzilog_interrupt(int irq, void *dev_id) } spin_unlock(&up->port.lock); - if (tty) - tty_flip_buffer_push(tty); + if (port) + tty_flip_buffer_push(port); up = up->next; } diff --git a/drivers/tty/serial/timbuart.c b/drivers/tty/serial/timbuart.c index f40c634f7528..6818410a2bea 100644 --- a/drivers/tty/serial/timbuart.c +++ b/drivers/tty/serial/timbuart.c @@ -100,7 +100,7 @@ static void timbuart_rx_chars(struct uart_port *port) } spin_unlock(&port->lock); - tty_flip_buffer_push(port->state->port.tty); + tty_flip_buffer_push(tport); spin_lock(&port->lock); dev_dbg(port->dev, "%s - total read %d bytes\n", diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c index 5caf1f0ebc82..5486505e87c7 100644 --- a/drivers/tty/serial/uartlite.c +++ b/drivers/tty/serial/uartlite.c @@ -156,7 +156,7 @@ static irqreturn_t ulite_isr(int irq, void *dev_id) /* work done? */ if (n > 1) { - tty_flip_buffer_push(port->state->port.tty); + tty_flip_buffer_push(&port->state->port); return IRQ_HANDLED; } else { return IRQ_NONE; diff --git a/drivers/tty/serial/ucc_uart.c b/drivers/tty/serial/ucc_uart.c index 7a2378627fa5..7355303dad99 100644 --- a/drivers/tty/serial/ucc_uart.c +++ b/drivers/tty/serial/ucc_uart.c @@ -470,7 +470,6 @@ static void qe_uart_int_rx(struct uart_qe_port *qe_port) unsigned char ch, *cp; struct uart_port *port = &qe_port->port; struct tty_port *tport = &port->state->port; - struct tty_struct *tty = tport->tty; struct qe_bd *bdp; u16 status; unsigned int flg; @@ -531,7 +530,7 @@ error_return: qe_port->rx_cur = bdp; /* Activate BH processing */ - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tport); return; diff --git a/drivers/tty/serial/vr41xx_siu.c b/drivers/tty/serial/vr41xx_siu.c index 62ee0166bc65..f655997f44af 100644 --- a/drivers/tty/serial/vr41xx_siu.c +++ b/drivers/tty/serial/vr41xx_siu.c @@ -313,12 +313,10 @@ static void siu_break_ctl(struct uart_port *port, int ctl) static inline void receive_chars(struct uart_port *port, uint8_t *status) { - struct tty_struct *tty; uint8_t lsr, ch; char flag; int max_count = RX_MAX_COUNT; - tty = port->state->port.tty; lsr = *status; do { @@ -365,7 +363,7 @@ static inline void receive_chars(struct uart_port *port, uint8_t *status) lsr = siu_read(port, UART_LSR); } while ((lsr & UART_LSR_DR) && (max_count-- > 0)); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&port->state->port); *status = lsr; } diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c index 7f4112423f3d..f1a398c672fa 100644 --- a/drivers/tty/serial/vt8500_serial.c +++ b/drivers/tty/serial/vt8500_serial.c @@ -137,15 +137,6 @@ static void vt8500_enable_ms(struct uart_port *port) static void handle_rx(struct uart_port *port) { struct tty_port *tport = &port->state->port; - struct tty_struct *tty = tty_port_tty_get(tport); - if (!tty) { - /* Discard data: no tty available */ - int count = (vt8500_read(port, VT8500_URFIDX) & 0x1f00) >> 8; - u16 ch; - while (count--) - ch = readw(port->membase + VT8500_RXFIFO); - return; - } /* * Handle overrun @@ -178,8 +169,7 @@ static void handle_rx(struct uart_port *port) tty_insert_flip_char(tport, c, flag); } - tty_flip_buffer_push(tty); - tty_kref_put(tty); + tty_flip_buffer_push(tport); } static void handle_tx(struct uart_port *port) diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c index 9ab910370c56..82a3151e393c 100644 --- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -147,15 +147,11 @@ static irqreturn_t xuartps_isr(int irq, void *dev_id) { struct uart_port *port = (struct uart_port *)dev_id; - struct tty_struct *tty; unsigned long flags; unsigned int isrstatus, numbytes; unsigned int data; char status = TTY_NORMAL; - /* Get the tty which could be NULL so don't assume it's valid */ - tty = tty_port_tty_get(&port->state->port); - spin_lock_irqsave(&port->lock, flags); /* Read the interrupt status register to determine which @@ -187,14 +183,11 @@ static irqreturn_t xuartps_isr(int irq, void *dev_id) } else if (isrstatus & XUARTPS_IXR_OVERRUN) port->icount.overrun++; - if (tty) - uart_insert_char(port, isrstatus, - XUARTPS_IXR_OVERRUN, data, - status); + uart_insert_char(port, isrstatus, XUARTPS_IXR_OVERRUN, + data, status); } spin_unlock(&port->lock); - if (tty) - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&port->state->port); spin_lock(&port->lock); } @@ -237,7 +230,6 @@ static irqreturn_t xuartps_isr(int irq, void *dev_id) /* be sure to release the lock and tty before leaving */ spin_unlock_irqrestore(&port->lock, flags); - tty_kref_put(tty); return IRQ_HANDLED; } diff --git a/drivers/tty/serial/zs.c b/drivers/tty/serial/zs.c index 92c00b24d0df..6a169877109b 100644 --- a/drivers/tty/serial/zs.c +++ b/drivers/tty/serial/zs.c @@ -603,7 +603,7 @@ static void zs_receive_chars(struct zs_port *zport) uart_insert_char(uport, status, Rx_OVR, ch, flag); } - tty_flip_buffer_push(uport->state->port.tty); + tty_flip_buffer_push(&uport->state->port); } static void zs_raw_transmit_chars(struct zs_port *zport) diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c index 2f6967d61a80..555fdc0ed0f1 100644 --- a/drivers/tty/synclink.c +++ b/drivers/tty/synclink.c @@ -1439,7 +1439,6 @@ static void mgsl_isr_receive_data( struct mgsl_struct *info ) u16 status; int work = 0; unsigned char DataByte; - struct tty_struct *tty = info->port.tty; struct mgsl_icount *icount = &info->icount; if ( debug_level >= DEBUG_LEVEL_ISR ) @@ -1501,7 +1500,7 @@ static void mgsl_isr_receive_data( struct mgsl_struct *info ) if (status & RXSTATUS_BREAK_RECEIVED) { flag = TTY_BREAK; if (info->port.flags & ASYNC_SAK) - do_SAK(tty); + do_SAK(info->port.tty); } else if (status & RXSTATUS_PARITY_ERROR) flag = TTY_PARITY; else if (status & RXSTATUS_FRAMING_ERROR) @@ -1524,7 +1523,7 @@ static void mgsl_isr_receive_data( struct mgsl_struct *info ) } if(work) - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&info->port); } /* mgsl_isr_misc() diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c index 9a0358a1e0dd..fced6acc74ee 100644 --- a/drivers/tty/synclink_gt.c +++ b/drivers/tty/synclink_gt.c @@ -1854,7 +1854,6 @@ static void hdlcdev_exit(struct slgt_info *info) */ static void rx_async(struct slgt_info *info) { - struct tty_struct *tty = info->port.tty; struct mgsl_icount *icount = &info->icount; unsigned int start, end; unsigned char *p; @@ -1915,8 +1914,8 @@ static void rx_async(struct slgt_info *info) break; } - if (tty && chars) - tty_flip_buffer_push(tty); + if (chars) + tty_flip_buffer_push(&info->port); } /* diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c index 419f58ff4a13..e4a2904af565 100644 --- a/drivers/tty/synclinkmp.c +++ b/drivers/tty/synclinkmp.c @@ -2167,7 +2167,6 @@ static void isr_rxrdy(SLMP_INFO * info) { u16 status; unsigned char DataByte; - struct tty_struct *tty = info->port.tty; struct mgsl_icount *icount = &info->icount; if ( debug_level >= DEBUG_LEVEL_ISR ) @@ -2225,8 +2224,7 @@ static void isr_rxrdy(SLMP_INFO * info) icount->frame,icount->overrun); } - if ( tty ) - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&info->port); } static void isr_txeom(SLMP_INFO * info, unsigned char status) diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index 1bfe97a8e2eb..b6efacadf23b 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -544,7 +544,7 @@ void tty_flush_to_ldisc(struct tty_struct *tty) /** * tty_flip_buffer_push - terminal - * @tty: tty to push + * @port: tty port to push * * Queue a push of the terminal flip buffers to the line discipline. This * function must not be called from IRQ context if port->low_latency is @@ -556,9 +556,9 @@ void tty_flush_to_ldisc(struct tty_struct *tty) * Locking: tty buffer lock. Driver locks in low latency mode. */ -void tty_flip_buffer_push(struct tty_struct *tty) +void tty_flip_buffer_push(struct tty_port *port) { - struct tty_bufhead *buf = &tty->port->buf; + struct tty_bufhead *buf = &port->buf; unsigned long flags; spin_lock_irqsave(&buf->lock, flags); @@ -566,7 +566,7 @@ void tty_flip_buffer_push(struct tty_struct *tty) buf->tail->commit = buf->tail->used; spin_unlock_irqrestore(&buf->lock, flags); - if (tty->port->low_latency) + if (port->low_latency) flush_to_ldisc(&buf->work); else schedule_work(&buf->work); |