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ALSA: opti-miro: fix OOPS if hardware is not detected 

If a hardware is not detected there is a kernel crash
due to not initialized snd_miro->aci pointer. This pointer
is initialized after detection of the opti (miro) chip.

This bug was introduced by patches to expose
ACI mikser outside the snd-miro driver.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Krzysztof Helt 2009-11-27 11:20:56 +01:00 committed by Takashi Iwai
parent 9dc9120c77
commit 8700055e0a
1 changed files with 2 additions and 1 deletions
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3
sound/isa/opti9xx/miro.c
View File

@ -1229,7 +1229,8 @@ static void snd_card_miro_free(struct snd_card *card)
struct snd_miro *miro = card->private_data;
release_and_free_resource(miro->res_aci_port);
miro->aci->aci_port = 0;
if (miro->aci)
miro->aci->aci_port = 0;
release_and_free_resource(miro->res_mc_base);
}