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[media] em28xx-audio: fix return code on device disconnect
authorMauro Carvalho Chehab <m.chehab@samsung.com>
Sun, 12 Jan 2014 15:57:08 +0000 (12:57 -0300)
committerMauro Carvalho Chehab <m.chehab@samsung.com>
Tue, 14 Jan 2014 16:34:23 +0000 (14:34 -0200)
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>

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