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firmware: arm_sdei: Remove while loop in sdei_event_unregister()

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This removes the unnecessary while loop in sdei_event_unregister()
because of the following two reasons. This shouldn't cause any
functional changes.

   * The while loop is executed for once, meaning it's not needed
     in theory.
   * With the while loop removed, the nested statements can be
     avoid to make the code a bit cleaner.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20200922130423.10173-10-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Gavin Shan 2020-09-22 23:04:19 +10:00 committed by Will Deacon
parent 1bbc755185
commit b06146b698
1 changed files with 14 additions and 15 deletions
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29
drivers/firmware/arm_sdei.c
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@ -491,24 +491,23 @@ int sdei_event_unregister(u32 event_num)
mutex_lock(&sdei_events_lock);
event = sdei_event_find(event_num);
do {
if (!event) {
pr_warn("Event %u not registered\n", event_num);
err = -ENOENT;
break;
}
if (!event) {
pr_warn("Event %u not registered\n", event_num);
err = -ENOENT;
goto unlock;
}
spin_lock(&sdei_list_lock);
event->reregister = false;
event->reenable = false;
spin_unlock(&sdei_list_lock);
spin_lock(&sdei_list_lock);
event->reregister = false;
event->reenable = false;
spin_unlock(&sdei_list_lock);
err = _sdei_event_unregister(event);
if (err)
break;
err = _sdei_event_unregister(event);
if (err)
goto unlock;
sdei_event_destroy(event);
} while (0);
sdei_event_destroy(event);
unlock:
mutex_unlock(&sdei_events_lock);
return err;