xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

TTY: switch tty_flip_buffer_push

Browse Source 
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>
This commit is contained in:
Jiri Slaby
2013-01-03 15:53:06 +01:00
committed by Greg Kroah-Hartman
parent d6c53c0e9b
commit 2e124b4a39
146 changed files with 446 additions and 988 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/tty/serial/ioc4_serial.c
View File

@@ -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);
}
/**