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