The patch titled
tty: fix logic change introduced by wait_event_interruptible_timeout()
has been added to the -mm tree. Its filename is
tty-fix-logic-change-introduced-by-wait_event_interruptible_timeout.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: tty: fix logic change introduced by wait_event_interruptible_timeout()
From: "Cory T. Tusar" <[EMAIL PROTECTED]>
Commit 5a52bd4a2dcb570333ce6fe2e16cd311650dbdc8 introduced a subtle logic
change in tty_wait_until_sent(). The original version would only error out
of the 'do { ... } while (timeout)' loop if signal_pending() evaluated to
true; a timeout or break due to an empty buffer would fall out of the loop
and into the tty->driver->wait_until_sent handling. The current
implementation will error out on either a pending signal or an empty
buffer, falling through to the tty->driver->wait_until_sent handling only
on a timeout.
This change reverts the logic flow in tty_wait_until_sent() to match that
prior to the aforementioned commit.
Signed-off-by: Cory T. Tusar <[EMAIL PROTECTED]>
Cc: Alan Cox <[EMAIL PROTECTED]>
Cc: Jiri Slaby <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---
drivers/char/tty_ioctl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN
drivers/char/tty_ioctl.c~tty-fix-logic-change-introduced-by-wait_event_interruptible_timeout
drivers/char/tty_ioctl.c
---
a/drivers/char/tty_ioctl.c~tty-fix-logic-change-introduced-by-wait_event_interruptible_timeout
+++ a/drivers/char/tty_ioctl.c
@@ -62,7 +62,7 @@ void tty_wait_until_sent(struct tty_stru
if (!timeout)
timeout = MAX_SCHEDULE_TIMEOUT;
if (wait_event_interruptible_timeout(tty->write_wait,
- !tty->driver->chars_in_buffer(tty), timeout))
+ !tty->driver->chars_in_buffer(tty), timeout) < 0)
return;
if (tty->driver->wait_until_sent)
tty->driver->wait_until_sent(tty, timeout);
_
Patches currently in -mm which might be from [EMAIL PROTECTED] are
tty-fix-logic-change-introduced-by-wait_event_interruptible_timeout.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
