From a6cece9d81990e729c1f9da2a5bff2d29f7df649 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Fri, 31 Oct 2014 11:24:32 +0100
Subject: [PATCH] ALSA: usb-audio: Pass direct struct pointer instead of
 list_head

Some functions in mixer.c and endpoint.c receive list_head instead of
the object itself.  This is not obvious and rather error-prone.  Let's
pass the proper object directly instead.

The functions in midi.c still receive list_head and this can't be
changed since the object definition isn't exposed to the outside of
midi.c, so left as is.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
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