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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-04-03 19:28:29 +0900 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-04-03 19:28:29 +0900 |
| commit | 1b4610ebf37a05a65e9f29cdf4d87c207573104d (patch) | |
| tree | f2c035b44a47e4ea663449e7e2138524805d3eba /sound/arm/pxa2xx-pcm-lib.c | |
| parent | 0ce790e7d736cedc563e1fb4e998babf5a4dbc3d (diff) | |
| parent | 97c96c076b8ef86533f2427ea145a9cd0ec5564f (diff) | |
| download | linux-1b4610ebf37a05a65e9f29cdf4d87c207573104d.tar.bz2 | |
Merge branch 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound-2.6 into for-2.6.39
Diffstat (limited to 'sound/arm/pxa2xx-pcm-lib.c')
| -rw-r--r-- | sound/arm/pxa2xx-pcm-lib.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/arm/pxa2xx-pcm-lib.c b/sound/arm/pxa2xx-pcm-lib.c index 8808b82311b1..76e0d5695075 100644 --- a/sound/arm/pxa2xx-pcm-lib.c +++ b/sound/arm/pxa2xx-pcm-lib.c @@ -140,6 +140,9 @@ int __pxa2xx_pcm_prepare(struct snd_pcm_substream *substream) if (!prtd || !prtd->params) return 0; + if (prtd->dma_ch == -1) + return -EINVAL; + DCSR(prtd->dma_ch) &= ~DCSR_RUN; DCSR(prtd->dma_ch) = 0; DCMD(prtd->dma_ch) = 0; |