From: Adam Goode <agoode@google.com>
Date: Wed, 4 Jun 2014 05:02:51 +0000 (-0400)
Subject: ALSA: seq: correctly detect input buffer overflow
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d89ffc7140e70fd8429f7147c552bdf22750a717;p=pandora-kernel.git

ALSA: seq: correctly detect input buffer overflow

commit 21fd3e956ee8a307a06bc6e095f5767a00eb2a7e upstream.

snd_seq_event_dup returns -ENOMEM in some buffer-full conditions,
but usually returns -EAGAIN. Make -EAGAIN trigger the overflow
condition in snd_seq_fifo_event_in so that the fifo is cleared
and -ENOSPC is returned to userspace as stated in the alsa-lib docs.

Signed-off-by: Adam Goode <agoode@google.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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