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ALSA: usb-audio: Check for possible chip NULL pointer before clearing probing flag

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commit 61a6a108d1 upstream.

Before clearing the probing flag in the error exit path, check that the
chip pointer is not NULL.

Signed-off-by: Thomas Pfaff <tpfaff@gmx.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Thomas Pfaff 2011-09-26 15:43:59 +02:00 committed by Greg Kroah-Hartman
parent abdd8c6a58
commit 81aac2ec5c
1 changed files with 5 additions and 3 deletions
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8
sound/usb/card.c
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@ -529,9 +529,11 @@ static void *snd_usb_audio_probe(struct usb_device *dev,
return chip;
__error:
if (chip && !chip->num_interfaces)
snd_card_free(chip->card);
chip->probing = 0;
if (chip) {
if (!chip->num_interfaces)
snd_card_free(chip->card);
chip->probing = 0;
}
mutex_unlock(&register_mutex);
__err_val:
return NULL;