From 82af6bc0986c5140efc875b2d91326031f0254ab Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 17 Jul 2008 23:37:20 +0200 Subject: [PATCH] ALSA: opti93x - Fix NULL dereference Probing non-existing device causes Oops with snd-opti93x driver due to NULL access in the destructor of the error path. Signed-off-by: Takashi Iwai Tested-by: Rene Herman Acked-by: Rene Herman Tested-by: Ingo Molnar Acked-by: Ingo Molnar --- sound/isa/opti9xx/opti92x-ad1848.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/isa/opti9xx/opti92x-ad1848.c b/sound/isa/opti9xx/opti92x-ad1848.c index 41c047e665ec..d20abb286124 100644 --- a/sound/isa/opti9xx/opti92x-ad1848.c +++ b/sound/isa/opti9xx/opti92x-ad1848.c @@ -688,7 +688,7 @@ static void snd_card_opti9xx_free(struct snd_card *card) if (chip) { #ifdef OPTi93X struct snd_cs4231 *codec = chip->codec; - if (codec->irq > 0) { + if (codec && codec->irq > 0) { disable_irq(codec->irq); free_irq(codec->irq, codec); } -- 2.30.2