[ALSA] ac97 - NULL check in snd_ac97_suspend/resume
Modules: AC97 Codec
Add NULL check in snd_ac97_suspend() and snd_ac97_resume() so that
the caller doesn't have to do it by itself.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c
index 9faeaef..abc83fa 100644
--- a/sound/pci/ac97/ac97_codec.c
+++ b/sound/pci/ac97/ac97_codec.c
@@ -2186,6 +2186,8 @@
*/
void snd_ac97_suspend(struct snd_ac97 *ac97)
{
+ if (! ac97)
+ return;
if (ac97->build_ops->suspend)
ac97->build_ops->suspend(ac97);
snd_ac97_powerdown(ac97);
@@ -2242,6 +2244,9 @@
{
unsigned long end_time;
+ if (! ac97)
+ return;
+
if (ac97->bus->ops->reset) {
ac97->bus->ops->reset(ac97);
goto __reset_ready;