From 9f249188a2927b7809ed790e4b568ea82039d919 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Tue, 27 Mar 2018 16:07:52 +0300
Subject: [PATCH] ALSA: pcm: potential uninitialized return values

commit 5607dddbfca774fb38bffadcb077fe03aa4ac5c6 upstream.

Smatch complains that "tmp" can be uninitialized if we do a zero size
write.

Fixes: 02a5d6925cd3 ("ALSA: pcm: Avoid potential races between OSS ioctls and read/write")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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Reading git-format-patch failed