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 <tiwai@suse.de> Tested-by: Rene Herman <rene.herman@gmail.com> Acked-by: Rene Herman <rene.herman@gmail.com> Tested-by: Ingo Molnar <mingo@elte.hu> Acked-by: Ingo Molnar <mingo@elte.hu>
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@ -688,7 +688,7 @@ static void snd_card_opti9xx_free(struct snd_card *card)
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if (chip) {
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if (chip) {
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#ifdef OPTi93X
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#ifdef OPTi93X
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struct snd_cs4231 *codec = chip->codec;
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struct snd_cs4231 *codec = chip->codec;
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if (codec->irq > 0) {
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if (codec && codec->irq > 0) {
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disable_irq(codec->irq);
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disable_irq(codec->irq);
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free_irq(codec->irq, codec);
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free_irq(codec->irq, codec);
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}
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}
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