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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-04-30 11:53:59 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-30 19:29:45 +0400
commit978e595f88a1fba5869aa42a4af4fba36f33ecac (patch)
tree60848f49949c5b7b518621ee36cdc6d500244539 /drivers/char/synclink.c
parentac0e4b7d319bf284bb64bc7e1c051417386b34a4 (diff)
downloadlinux-978e595f88a1fba5869aa42a4af4fba36f33ecac.tar.xz
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>
Diffstat (limited to 'drivers/char/synclink.c')
-rw-r--r--drivers/char/synclink.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index 1c9c440f59ce..dbbd998ae103 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -3157,8 +3157,7 @@ static void mgsl_close(struct tty_struct *tty, struct file * filp)
if (info->flags & ASYNC_INITIALIZED)
mgsl_wait_until_sent(tty, info->timeout);
- if (tty->driver->flush_buffer)
- tty->driver->flush_buffer(tty);
+ mgsl_flush_buffer(tty);
tty_ldisc_flush(tty);
@@ -3221,7 +3220,8 @@ static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout)
* interval should also be less than the timeout.
* Note: use tight timings here to satisfy the NIST-PCTS.
*/
-
+
+ lock_kernel();
if ( info->params.data_rate ) {
char_time = info->timeout/(32 * 5);
if (!char_time)
@@ -3251,6 +3251,7 @@ static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout)
break;
}
}
+ unlock_kernel();
exit:
if (debug_level >= DEBUG_LEVEL_INFO)