[PATCH 3.10 31/80] ALSA: 6fire: Fix probe of multiple cards

From: Greg Kroah-Hartman
Date: Tue Nov 26 2013 - 20:53:12 EST


3.10-stable review patch. If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@xxxxxxx>

commit 9b389a8a022110b4bc055a19b888283544d9eba6 upstream.

The probe code of snd-usb-6fire driver overrides the devices[] pointer
wrongly without checking whether it's already occupied or not. This
would screw up the device disconnection later.

Spotted by coverity CID 141423.

Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
sound/usb/6fire/chip.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/usb/6fire/chip.c
+++ b/sound/usb/6fire/chip.c
@@ -101,7 +101,7 @@ static int usb6fire_chip_probe(struct us
usb_set_intfdata(intf, chips[i]);
mutex_unlock(&register_mutex);
return 0;
- } else if (regidx < 0)
+ } else if (!devices[i] && regidx < 0)
regidx = i;
}
if (regidx < 0) {


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