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ALSA: oxfw: remove an unnecessary condition in hwdep_read() 

Smatch complains that "count" isn't clamped properly and
"oxfw->dev_lock_changed" is false then it leads to an information
leak.  But it turns out that "oxfw->dev_lock_changed" is always
set and the condition can be removed.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/YA6ntkBxT/4DJ4YK@mwanda
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Dan Carpenter 2021-01-25 14:12:54 +03:00 committed by Takashi Iwai
parent 62c2b4be0d
commit 00f3a4113c
1 changed files with 4 additions and 6 deletions
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10
sound/firewire/oxfw/oxfw-hwdep.c
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@ -35,13 +35,11 @@ static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count,
}
memset(&event, 0, sizeof(event));
if (oxfw->dev_lock_changed) {
event.lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS;
event.lock_status.status = (oxfw->dev_lock_count > 0);
oxfw->dev_lock_changed = false;
event.lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS;
event.lock_status.status = (oxfw->dev_lock_count > 0);
oxfw->dev_lock_changed = false;
count = min_t(long, count, sizeof(event.lock_status));
}
count = min_t(long, count, sizeof(event.lock_status));
spin_unlock_irq(&oxfw->lock);