From 3f1af9d26fb02a99a60a045b8ae93ccc6fe50b97 Mon Sep 17 00:00:00 2001 From: Axel Lin <axel.lin@gmail.com> Date: Mon, 29 Nov 2010 17:42:47 +0800 Subject: 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> --- sound/soc/nuc900/nuc900-pcm.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'sound/soc') diff --git a/sound/soc/nuc900/nuc900-pcm.c b/sound/soc/nuc900/nuc900-pcm.c index 2245f8b8edc..8263f56dc66 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) -- cgit v1.2.3-70-g09d2