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| author | Axel Lin <axel.lin@gmail.com> | 2010-11-29 17:42:47 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-11-30 11:09:24 +0000 |
| commit | 3f1af9d26fb02a99a60a045b8ae93ccc6fe50b97 (patch) | |
| tree | 6af31955dd83eb3718050a5a0eeb1887bc8504b2 | |
| parent | 39a545559f8d5f13e8a4a7dfddcaad0e2ba9bcfb (diff) | |
| download | blackbird-op-linux-3f1af9d26fb02a99a60a045b8ae93ccc6fe50b97.tar.gz blackbird-op-linux-3f1af9d26fb02a99a60a045b8ae93ccc6fe50b97.zip | |
ASoC: Fix missing spin_unlock_irqrestore
In nuc900_dma_hw_params(), if snd_pcm_lib_malloc_pages failed
it returns without calling spin_unlock_irqrestore().
Since snd_pcm_lib_malloc_pages() does not touch struct nuc900_audio,
we don't need to hold the lock while calling snd_pcm_lib_malloc_pages().
Fix it by moving spin_lock_irqsave() down to after snd_pcm_lib_malloc_pages().
In nuc900_dma_prepare(), spin_unlock_irqrestore() is missing in the error path.
Fix it by removing the return in default case.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Wan ZongShun <mcuos.com@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| -rw-r--r-- | sound/soc/nuc900/nuc900-pcm.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sound/soc/nuc900/nuc900-pcm.c b/sound/soc/nuc900/nuc900-pcm.c index 2245f8b8edc1..8263f56dc665 100644 --- a/sound/soc/nuc900/nuc900-pcm.c +++ b/sound/soc/nuc900/nuc900-pcm.c @@ -50,12 +50,12 @@ static int nuc900_dma_hw_params(struct snd_pcm_substream *substream, unsigned long flags; int ret = 0; - spin_lock_irqsave(&nuc900_audio->lock, flags); - ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); if (ret < 0) return ret; + spin_lock_irqsave(&nuc900_audio->lock, flags); + nuc900_audio->substream = substream; nuc900_audio->dma_addr[substream->stream] = runtime->dma_addr; nuc900_audio->buffersize[substream->stream] = @@ -169,6 +169,7 @@ static int nuc900_dma_prepare(struct snd_pcm_substream *substream) struct snd_pcm_runtime *runtime = substream->runtime; struct nuc900_audio *nuc900_audio = runtime->private_data; unsigned long flags, val; + int ret = 0; spin_lock_irqsave(&nuc900_audio->lock, flags); @@ -197,10 +198,10 @@ static int nuc900_dma_prepare(struct snd_pcm_substream *substream) AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val); break; default: - return -EINVAL; + ret = -EINVAL; } spin_unlock_irqrestore(&nuc900_audio->lock, flags); - return 0; + return ret; } static int nuc900_dma_trigger(struct snd_pcm_substream *substream, int cmd) |
