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Message-Id: <20110928220149.507401304@clark.kroah.org>
Date: Wed, 28 Sep 2011 15:03:13 -0700
From: Greg KH <gregkh@...e.de>
To: linux-kernel@...r.kernel.org, stable@...nel.org
Cc: stable-review@...nel.org, torvalds@...ux-foundation.org,
akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
Thomas Pfaff <tpfaff@....net>, Takashi Iwai <tiwai@...e.de>
Subject: [229/244] ALSA: usb-audio: Check for possible chip NULL pointer before clearing probing flag
3.0-stable review patch. If anyone has any objections, please let us know.
------------------
From: Thomas Pfaff <tpfaff@....net>
commit 61a6a108d15213f5ee06332e1e7766d3860e4453 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@....net>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
sound/usb/card.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -529,9 +529,11 @@ static void *snd_usb_audio_probe(struct
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(®ister_mutex);
__err_val:
return NULL;
--
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