[ALSA] Fix gus_pcm dereference before NULL

Modules: GUS Library

The NULL check of substream is simply superfluous. It is
guaranteed to receive non-NULL substream. Thanks Takashi.

Coverity bug #861

Signed-off-by: Eugene Teo <eugene.teo@eugeneteo.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 0 insertions, 2 deletions

diff --git a/sound/isa/gus/gus_pcm.c b/sound/isa/gus/gus_pcm.c
index d0829393ec8..c7f95e7aa01 100644
--- a/sound/isa/gus/gus_pcm.c
+++ b/sound/isa/gus/gus_pcm.c
@@ -114,8 +114,6 @@ static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream)
         unsigned char pan;
         unsigned int voice;
 
-        if (substream == NULL)
-                return;
         spin_lock_irqsave(&pcmp->lock, flags);
         if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
                 spin_unlock_irqrestore(&pcmp->lock, flags);