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authorJiri Slaby <jslaby@suse.cz>2013-01-03 15:53:06 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-15 22:30:15 -0800
commit2e124b4a390ca85325fae75764bef92f0547fa25 (patch)
tree5519fbcdbe954e79b271ea6d31ac5a4dc754c4f5 /drivers/tty/serial/ioc3_serial.c
parentd6c53c0e9bd0a83f9f9ddbc9fd80141a54d83896 (diff)
downloadop-kernel-dev-2e124b4a390ca85325fae75764bef92f0547fa25.zip
op-kernel-dev-2e124b4a390ca85325fae75764bef92f0547fa25.tar.gz
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/ioc3_serial.c')
-rw-r--r--drivers/tty/serial/ioc3_serial.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/tty/serial/ioc3_serial.c b/drivers/tty/serial/ioc3_serial.c
index edbdc4e..6e4c715 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;
}
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