[PATCH 3.2 013/185] ALSA: 6fire: Fix probe of multiple cards

[Ben Hutchings <ben@xxxxxxxxxxxxxxx>]

3.2.54-rc1 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: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 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
@@ -102,7 +102,7 @@ static int __devinit usb6fire_chip_probe
 			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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