Messages in this thread Patch in this message | | | Date | Sat, 11 Aug 2007 16:39:23 +0200 | From | Michal Januszewski <> | Subject | [PATCH 2/7] uvesafb: always use mutexes when accessing uvfb_tasks |
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Accesses to the uvfb_tasks array should be always be protected by a mutex to avoid race conditions.
Signed-off-by: Michal Januszewski <spock@gentoo.org> --- diff --git a/drivers/video/uvesafb.c b/drivers/video/uvesafb.c index aa5a9c3..e480670 100644 --- a/drivers/video/uvesafb.c +++ b/drivers/video/uvesafb.c @@ -208,6 +208,10 @@ static int uvesafb_exec(struct uvesafb_ktask *task) err = !wait_for_completion_timeout(task->done, msecs_to_jiffies(UVESAFB_TIMEOUT)); + mutex_lock(&uvfb_lock); + uvfb_tasks[seq] = NULL; + mutex_unlock(&uvfb_lock); + seq++; if (seq >= UVESAFB_TASKS_MAX) seq = 0;
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