em28xx-alsa: Fix error patch for init/fini

If something bad happens during init, we free the card data.
However, we still keep it initialized, causing some dependent
code to be called at .fini.

Fix it.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/media/usb/em28xx/em28xx-audio.c b/drivers/media/usb/em28xx/em28xx-audio.c
index 1563f71..45bea1a 100644 (file)
--- a/drivers/media/usb/em28xx/em28xx-audio.c
+++ b/drivers/media/usb/em28xx/em28xx-audio.c
@@ -948,6 +948,7 @@ urb_free:
 
 card_free:
        snd_card_free(card);
+       adev->sndcard = NULL;
 
        return err;
 }
@@ -966,12 +967,12 @@ static int em28xx_audio_fini(struct em28xx *dev)
 
        em28xx_info("Closing audio extension");
 
-       snd_card_disconnect(dev->adev.sndcard);
-       flush_work(&dev->wq_trigger);
+       if (dev->adev.sndcard) {
+               snd_card_disconnect(dev->adev.sndcard);
+               flush_work(&dev->wq_trigger);
 
-       em28xx_audio_free_urb(dev);
+               em28xx_audio_free_urb(dev);
 
-       if (dev->adev.sndcard) {
                snd_card_free(dev->adev.sndcard);
                dev->adev.sndcard = NULL;
        }