openwrtv3/target/linux/brcm2708/patches-3.10/0146-fixes-a-bug-in-the-snd-bcm2835-driver.patch
Florian Fainelli bb39b8d99a brcm2708: update against latest rpi-3.10.y branch
Update our copies of the brcm2708 patches to the latest rpi-3.10-y
rebased against linux-3.10.y stable (3.10.32). This should hopefully
make it easier for us in the future to leverage the raspberry/rpi-*
branches.

Signed-off-by: Florian Fainelli <florian@openwrt.org>

SVN-Revision: 39770
2014-02-28 20:30:08 +00:00

31 lines
1.1 KiB
Diff

From f7af161699cbbca544dd8feab4c05d9bc5ea8807 Mon Sep 17 00:00:00 2001
From: Janis Danisevskis <werwurm@snafu.de>
Date: Wed, 1 Jan 2014 18:41:53 +0100
Subject: [PATCH 146/174] fixes a bug in the snd-bcm2835 driver
The "instance" field of bcm2835_alsa_stream_t may be accessed uninitialized
by bcm2835_audio_set_ctls_chan if called during stream creation. This fix
deferres the addition to of the stream to chip untill it has been fully
initialized.
---
sound/arm/bcm2835-pcm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/sound/arm/bcm2835-pcm.c
+++ b/sound/arm/bcm2835-pcm.c
@@ -127,7 +127,6 @@ static int snd_bcm2835_playback_open(str
alsa_stream->chip = chip;
alsa_stream->substream = substream;
alsa_stream->idx = idx;
- chip->alsa_stream[idx] = alsa_stream;
sema_init(&alsa_stream->buffers_update_sem, 0);
sema_init(&alsa_stream->control_sem, 0);
@@ -149,6 +148,7 @@ static int snd_bcm2835_playback_open(str
kfree(alsa_stream);
return err;
}
+ chip->alsa_stream[idx] = alsa_stream;
alsa_stream->open = 1;
alsa_stream->draining = 1;