ALSA: 6fire: Fix probe of multiple cards
Takashi Iwai [Mon, 28 Oct 2013 10:24:23 +0000 (11:24 +0100)]
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@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

sound/usb/6fire/chip.c

index 4394ae7..0716ba6 100644 (file)
@@ -101,7 +101,7 @@ static int usb6fire_chip_probe(struct usb_interface *intf,
                        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) {