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[ALSA] ac97 - NULL check in snd_ac97_suspend/resume

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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>
This commit is contained in:
Takashi Iwai 2005-11-17 16:00:01 +01:00 committed by Jaroslav Kysela
parent 603bf524aa
commit e26e7545e9
1 changed files with 5 additions and 0 deletions
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5
sound/pci/ac97/ac97_codec.c
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@ -2186,6 +2186,8 @@ static void snd_ac97_powerdown(struct snd_ac97 *ac97)
*/
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 @@ void snd_ac97_resume(struct snd_ac97 *ac97)
{
unsigned long end_time;
if (! ac97)
return;
if (ac97->bus->ops->reset) {
ac97->bus->ops->reset(ac97);
goto __reset_ready;