From: Dan Carpenter Date: Fri, 21 Aug 2015 11:25:34 +0000 (+0300) Subject: ALSA: hdsp: silence and underflow warning X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9e46aedab389122948144713ee5b8bae2658fb1b;p=openwrt%2Fstaging%2Fblogic.git ALSA: hdsp: silence and underflow warning I believe this probably cannot happen, as the code suggests. There would have to be an kcontrol->index.id which was zero, otherwise this would be prevented in snd_ctl_find_id(). But snd_BUG_ON() is just a WARN() or a no-op so static checkers complain that we keep on going with a negative offset. Let's just handle the error as well as printing a warning. Signed-off-by: Dan Carpenter Signed-off-by: Takashi Iwai --- diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c index c19e021ccf66..468a95cdce70 100644 --- a/sound/pci/rme9652/hdsp.c +++ b/sound/pci/rme9652/hdsp.c @@ -2806,7 +2806,8 @@ static int snd_hdsp_get_adat_sync_check(struct snd_kcontrol *kcontrol, struct sn struct hdsp *hdsp = snd_kcontrol_chip(kcontrol); offset = ucontrol->id.index - 1; - snd_BUG_ON(offset < 0); + if (snd_BUG_ON(offset < 0)) + return -EINVAL; switch (hdsp->io_type) { case Digiface: