From 19a376b9ece69eeeb5f36f33abed485d4a3b7c61 Mon Sep 17 00:00:00 2001
From: Daniel Mack <zonque@gmail.com>
Date: Tue, 19 Mar 2013 21:09:24 +0100
Subject: [PATCH] ALSA: snd-usb: mixer: propagate errors up the call chain

commit 4d7b86c98e445b075c2c4c3757eb6d3d6efbe72e upstream.

In check_input_term() and parse_audio_feature_unit(), propagate the
error value that has been returned by a failing function instead of
-EINVAL. That helps cleaning up the error pathes in the mixer.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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