From 61ca4107a16828559e2463e49b87002990da0b98 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Fri, 27 Feb 2015 17:57:55 +0100
Subject: [PATCH] ALSA: hda - Don't assume non-NULL PCM ops

The PCM ops might be set NULL, or cleared to NULL when the driver is
unbound.  Give a proper NULL check at each place to be more robust.

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