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path: root/drivers/tty/synclinkmp.c
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Diffstat (limited to 'drivers/tty/synclinkmp.c')
-rw-r--r--drivers/tty/synclinkmp.c103
1 files changed, 50 insertions, 53 deletions
diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c
index fd43fb6f7cee..6d5780cf1d57 100644
--- a/drivers/tty/synclinkmp.c
+++ b/drivers/tty/synclinkmp.c
@@ -262,8 +262,7 @@ typedef struct _synclinkmp_info {
bool sca_statctrl_requested;
u32 misc_ctrl_value;
- char flag_buf[MAX_ASYNC_BUFFER_SIZE];
- char char_buf[MAX_ASYNC_BUFFER_SIZE];
+ char *flag_buf;
bool drop_rts_on_tx_done;
struct _input_signal_events input_signal_events;
@@ -762,7 +761,7 @@ static int open(struct tty_struct *tty, struct file *filp)
goto cleanup;
}
- info->port.tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ info->port.low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
spin_lock_irqsave(&info->netlock, flags);
if (info->netcount) {
@@ -883,7 +882,7 @@ static void set_termios(struct tty_struct *tty, struct ktermios *old_termios)
/* Handle transition to B0 status */
if (old_termios->c_cflag & CBAUD &&
!(tty->termios.c_cflag & CBAUD)) {
- info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR);
+ info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
spin_lock_irqsave(&info->lock,flags);
set_signals(info);
spin_unlock_irqrestore(&info->lock,flags);
@@ -1677,8 +1676,8 @@ static int hdlcdev_open(struct net_device *dev)
return rc;
}
- /* assert DTR and RTS, apply hardware settings */
- info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ /* assert RTS and DTR, apply hardware settings */
+ info->serial_signals |= SerialSignal_RTS | SerialSignal_DTR;
program_hw(info);
/* enable network layer transmit */
@@ -2008,9 +2007,6 @@ static void bh_handler(struct work_struct *work)
SLMP_INFO *info = container_of(work, SLMP_INFO, task);
int action;
- if (!info)
- return;
-
if ( debug_level >= DEBUG_LEVEL_BH )
printk( "%s(%d):%s bh_handler() entry\n",
__FILE__,__LINE__,info->device_name);
@@ -2132,13 +2128,11 @@ static void isr_rxint(SLMP_INFO * info)
/* process break detection if tty control
* is not set to ignore it
*/
- if ( tty ) {
- if (!(status & info->ignore_status_mask1)) {
- if (info->read_status_mask1 & BRKD) {
- tty_insert_flip_char(tty, 0, TTY_BREAK);
- if (info->port.flags & ASYNC_SAK)
- do_SAK(tty);
- }
+ if (!(status & info->ignore_status_mask1)) {
+ if (info->read_status_mask1 & BRKD) {
+ tty_insert_flip_char(&info->port, 0, TTY_BREAK);
+ if (tty && (info->port.flags & ASYNC_SAK))
+ do_SAK(tty);
}
}
}
@@ -2170,7 +2164,6 @@ 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 )
@@ -2203,26 +2196,22 @@ static void isr_rxrdy(SLMP_INFO * info)
status &= info->read_status_mask2;
- if ( tty ) {
- if (status & PE)
- flag = TTY_PARITY;
- else if (status & FRME)
- flag = TTY_FRAME;
- if (status & OVRN) {
- /* Overrun is special, since it's
- * reported immediately, and doesn't
- * affect the current character
- */
- over = true;
- }
+ if (status & PE)
+ flag = TTY_PARITY;
+ else if (status & FRME)
+ flag = TTY_FRAME;
+ if (status & OVRN) {
+ /* Overrun is special, since it's
+ * reported immediately, and doesn't
+ * affect the current character
+ */
+ over = true;
}
} /* end of if (error) */
- if ( tty ) {
- tty_insert_flip_char(tty, DataByte, flag);
- if (over)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
- }
+ tty_insert_flip_char(&info->port, DataByte, flag);
+ if (over)
+ tty_insert_flip_char(&info->port, 0, TTY_OVERRUN);
}
if ( debug_level >= DEBUG_LEVEL_ISR ) {
@@ -2232,8 +2221,7 @@ 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)
@@ -2718,7 +2706,7 @@ static void shutdown(SLMP_INFO * info)
reset_port(info);
if (!info->port.tty || info->port.tty->termios.c_cflag & HUPCL) {
- info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS);
+ info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
set_signals(info);
}
@@ -2780,12 +2768,12 @@ static void change_params(SLMP_INFO *info)
cflag = info->port.tty->termios.c_cflag;
- /* if B0 rate (hangup) specified then negate DTR and RTS */
- /* otherwise assert DTR and RTS */
+ /* if B0 rate (hangup) specified then negate RTS and DTR */
+ /* otherwise assert RTS and DTR */
if (cflag & CBAUD)
- info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ info->serial_signals |= SerialSignal_RTS | SerialSignal_DTR;
else
- info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR);
+ info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
/* byte size and parity */
@@ -3224,12 +3212,12 @@ static int tiocmget(struct tty_struct *tty)
get_signals(info);
spin_unlock_irqrestore(&info->lock,flags);
- result = ((info->serial_signals & SerialSignal_RTS) ? TIOCM_RTS:0) +
- ((info->serial_signals & SerialSignal_DTR) ? TIOCM_DTR:0) +
- ((info->serial_signals & SerialSignal_DCD) ? TIOCM_CAR:0) +
- ((info->serial_signals & SerialSignal_RI) ? TIOCM_RNG:0) +
- ((info->serial_signals & SerialSignal_DSR) ? TIOCM_DSR:0) +
- ((info->serial_signals & SerialSignal_CTS) ? TIOCM_CTS:0);
+ result = ((info->serial_signals & SerialSignal_RTS) ? TIOCM_RTS : 0) |
+ ((info->serial_signals & SerialSignal_DTR) ? TIOCM_DTR : 0) |
+ ((info->serial_signals & SerialSignal_DCD) ? TIOCM_CAR : 0) |
+ ((info->serial_signals & SerialSignal_RI) ? TIOCM_RNG : 0) |
+ ((info->serial_signals & SerialSignal_DSR) ? TIOCM_DSR : 0) |
+ ((info->serial_signals & SerialSignal_CTS) ? TIOCM_CTS : 0);
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):%s tiocmget() value=%08X\n",
@@ -3284,9 +3272,9 @@ static void dtr_rts(struct tty_port *port, int on)
spin_lock_irqsave(&info->lock,flags);
if (on)
- info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ info->serial_signals |= SerialSignal_RTS | SerialSignal_DTR;
else
- info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR);
+ info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
set_signals(info);
spin_unlock_irqrestore(&info->lock,flags);
}
@@ -3553,6 +3541,13 @@ static int alloc_tmp_rx_buf(SLMP_INFO *info)
info->tmp_rx_buf = kmalloc(info->max_frame_size, GFP_KERNEL);
if (info->tmp_rx_buf == NULL)
return -ENOMEM;
+ /* unused flag buffer to satisfy receive_buf calling interface */
+ info->flag_buf = kzalloc(info->max_frame_size, GFP_KERNEL);
+ if (!info->flag_buf) {
+ kfree(info->tmp_rx_buf);
+ info->tmp_rx_buf = NULL;
+ return -ENOMEM;
+ }
return 0;
}
@@ -3560,6 +3555,8 @@ static void free_tmp_rx_buf(SLMP_INFO *info)
{
kfree(info->tmp_rx_buf);
info->tmp_rx_buf = NULL;
+ kfree(info->flag_buf);
+ info->flag_buf = NULL;
}
static int claim_resources(SLMP_INFO *info)
@@ -4357,7 +4354,7 @@ static void reset_port(SLMP_INFO *info)
tx_stop(info);
rx_stop(info);
- info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS);
+ info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
set_signals(info);
/* disable all port interrupts */
@@ -4753,8 +4750,8 @@ static void get_signals(SLMP_INFO *info)
u16 gpstatus = read_status_reg(info);
u16 testbit;
- /* clear all serial signals except DTR and RTS */
- info->serial_signals &= SerialSignal_DTR + SerialSignal_RTS;
+ /* clear all serial signals except RTS and DTR */
+ info->serial_signals &= SerialSignal_RTS | SerialSignal_DTR;
/* set serial signal bits to reflect MISR */
@@ -4773,7 +4770,7 @@ static void get_signals(SLMP_INFO *info)
info->serial_signals |= SerialSignal_DSR;
}
-/* Set the state of DTR and RTS based on contents of
+/* Set the state of RTS and DTR based on contents of
* serial_signals member of device context.
*/
static void set_signals(SLMP_INFO *info)
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.