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| author |   Jiri Slaby <jslaby@suse.cz> | 2013-01-03 15:53:06 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-15 22:30:15 -0800 |
| commit | 2e124b4a390ca85325fae75764bef92f0547fa25 (patch) | |
| tree | 5519fbcdbe954e79b271ea6d31ac5a4dc754c4f5 /drivers/tty/serial/sunsu.c | |
| parent | TTY: move low_latency to tty_port (diff) | |
| download | linux-dev-2e124b4a390ca85325fae75764bef92f0547fa25.tar.xz linux-dev-2e124b4a390ca85325fae75764bef92f0547fa25.zip | |
TTY: switch tty_flip_buffer_push
Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.
Now, the one where most of tty_port_tty_get gets removed:
tty_flip_buffer_push.
IOW we also closed all the races in drivers not using tty_port_tty_get
at all yet.
Also we move tty_flip_buffer_push declaration from include/linux/tty.h
to include/linux/tty_flip.h to all others while we are changing it
anyway.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/sunsu.c')
| -rw-r--r-- | drivers/tty/serial/sunsu.c | 13 |
1 files changed, 3 insertions, 10 deletions
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); |