tty/serial: lay the foundations for the next set of reworks
- Stop drivers calling their own flush method indirectly, it obfuscates code
and it will change soon anyway
- A few more lock_kernel paths temporarily needed in some driver internal
waiting code
- Remove private put_char method that does a write call for one char - we
have that anyway
- Most but not yet all of the termios copy under lock fixing (some has other
dependencies to follow)
- Note a few locking bugs in drivers found in the process
- Kill remaining [ab]users of TIOCG/SSOFTCAR in the driver, these must go to
fix the termios locking
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 5833564..45d8eb5 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -503,20 +503,9 @@
* The wrappers maintain line discipline references
* while calling into the line discipline.
*
- * ldisc_flush_buffer - flush line discipline receive buffers
* ldisc_receive_buf - pass receive data to line discipline
*/
-static void ldisc_flush_buffer(struct tty_struct *tty)
-{
- struct tty_ldisc *ld = tty_ldisc_ref(tty);
- if (ld) {
- if (ld->flush_buffer)
- ld->flush_buffer(tty);
- tty_ldisc_deref(ld);
- }
-}
-
static void ldisc_receive_buf(struct tty_struct *tty,
const __u8 *data, char *flags, int count)
{
@@ -2467,10 +2456,9 @@
if (info->flags & ASYNC_INITIALIZED)
mgslpc_wait_until_sent(tty, info->timeout);
- if (tty->driver->flush_buffer)
- tty->driver->flush_buffer(tty);
+ mgslpc_flush_buffer(tty);
- ldisc_flush_buffer(tty);
+ tty_ldisc_flush(tty);
shutdown(info);
