commit 229295f1d6713bc8c8ba900ba62bca03e34bba52
author Mauro Carvalho Chehab <m.chehab@samsung.com> Sun Jan 12 12:57:08 2014 -0300
committer Mauro Carvalho Chehab <m.chehab@samsung.com> Tue Jan 14 14:34:23 2014 -0200
tree 6103e6cc81c1d015f946a6fbda6844435597ace2
parent e847022a8e1d732da96ddbd8d4170500f4c3f8b1

[media] em28xx-audio: fix return code on device disconnect

Alsa has an special non-negative return code to indicate device removal
at snd_em28xx_capture_pointer(). Use it, instead of an error code.

Reviewed-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Tested-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/usb/em28xx/em28xx-audio.c

diff --git a/drivers/media/usb/em28xx/em28xx-audio.c b/drivers/media/usb/em28xx/em28xx-audio.c
index f3e3200..47766b7 100644
--- a/drivers/media/usb/em28xx/em28xx-audio.c
+++ b/drivers/media/usb/em28xx/em28xx-audio.c
@@ -434,7 +434,7 @@
 
 	dev = snd_pcm_substream_chip(substream);
 	if (dev->disconnected)
-		return -ENODEV;
+		return SNDRV_PCM_POS_XRUN;
 
 	spin_lock_irqsave(&dev->adev.slock, flags);
 	hwptr_done = dev->adev.hwptr_done_capture;