From: Frank Seidel <fseidel@suse.de>
To: Jiri Slaby <jirislaby@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [RFC 9/13] Char: nozomi, lock cleanup
Date: Sat, 10 Nov 2007 16:42:51 +0100 [thread overview]
Message-ID: <200711101642.52289.fseidel@suse.de> (raw)
In-Reply-To: <25311158751454229887.slaby@pripojeni.net>
On Samstag 10 November 2007 00:48:52, you (Jiri Slaby) wrote:
> nozomi, lock cleanup
>
> - semaphore is deprecated, use mutex instead
> - don't return -ERESTARTSYS when signal might not be pending since it's not
> permitted (unknown retval mioght reach userspace)
> - don't lock interruptible in close or the card might not be stopped on last
> close
Good catches. But i had to change it a bit, especially the mutex_trylock.
>From mutex.c: "..it is negated to the down_trylock() return values!
Be careful about this when converting semaphores to mutexes." ;-)
Now it works again (doesn't deadlock my card anymore).
Thanks,
Frank
next prev parent reply other threads:[~2007-11-10 15:44 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-09 23:43 [RFC 1/13] Char: nozomi, remove unneded stuff Jiri Slaby
2007-11-09 23:44 ` [RFC 2/13] Char: nozomi, expand some functions Jiri Slaby
2007-11-10 15:41 ` Frank Seidel
2007-11-09 23:44 ` [RFC 3/13] Char: nozomi, fix fail paths Jiri Slaby
2007-11-10 15:41 ` Frank Seidel
2007-11-09 23:45 ` [RFC 4/13] Char: nozomi, tty index cleanup Jiri Slaby
2007-11-10 15:41 ` Frank Seidel
2007-11-10 15:50 ` Jiri Slaby
2007-11-09 23:46 ` [RFC 5/13] Char: nozomi, ioctls cleanup Jiri Slaby
2007-11-10 15:41 ` Frank Seidel
2007-11-09 23:46 ` [RFC 6/13] Char: nozomi, reorder and cleanup probe, remove Jiri Slaby
2007-11-10 15:42 ` Frank Seidel
2007-11-09 23:47 ` [RFC 7/13] Char: nozomi, remove struct irq Jiri Slaby
2007-11-10 15:42 ` Frank Seidel
2007-11-12 15:11 ` Frank Seidel
2007-11-09 23:48 ` [RFC 8/13] Char: nozomi, tty cleanup Jiri Slaby
2007-11-10 15:42 ` Frank Seidel
2007-11-12 18:43 ` Frank Seidel
2007-11-09 23:48 ` [RFC 9/13] Char: nozomi, lock cleanup Jiri Slaby
2007-11-10 15:42 ` Frank Seidel [this message]
2007-11-09 23:49 ` [RFC! 10/13] Char: nozomi, fix tty_flip_buffer_push Jiri Slaby
2007-11-10 15:43 ` Frank Seidel
2007-11-09 23:50 ` [RFC 11/13] Char: nozomi, remove unused includes Jiri Slaby
2007-11-10 15:43 ` Frank Seidel
2007-11-09 23:50 ` [RFC 12/13] Char: nozomi, remove void acc char2 char3 more mp mp.c mp.yy m1 nozomi2 proto rej slock1 casts Jiri Slaby
2007-11-10 15:43 ` Frank Seidel
2007-11-09 23:51 ` [RFC 13/13] Char: nozomi, cleanup read and write Jiri Slaby
2007-11-10 15:43 ` Frank Seidel
2007-11-10 16:15 ` Adrian Bunk
2007-11-10 22:04 ` Jiri Slaby
2007-11-11 2:37 ` Frank Seidel
2007-11-11 16:02 ` Frank Seidel
2007-11-12 7:54 ` Adrian Bunk
2007-11-12 9:43 ` Frank Seidel
2007-11-10 15:41 ` [RFC 1/13] Char: nozomi, remove unneded stuff Frank Seidel
2007-11-10 15:55 ` Jiri Slaby
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