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authorTakashi Iwai <tiwai@suse.de>2021-07-28 13:23:50 +0200
committerMark Brown <broonie@kernel.org>2021-07-30 17:20:49 +0100
commit2e6b836312a477d647a7920b56810a5a25f6c856 (patch)
tree0301f96b71f25d4c22b73aa409441c6fc896bed7 /sound
parent926ef1a4c245c093acc07807e466ad2ef0ff6ccb (diff)
ASoC: intel: atom: Fix reference to PCM buffer address
PCM buffers might be allocated dynamically when the buffer preallocation failed or a larger buffer is requested, and it's not guaranteed that substream->dma_buffer points to the actually used buffer. The address should be retrieved from runtime->dma_addr, instead of substream->dma_buffer (and shouldn't use virt_to_phys). Also, remove the line overriding runtime->dma_area superfluously, which was already set up at the PCM buffer allocation. Cc: Cezary Rojewski <cezary.rojewski@intel.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20210728112353.6675-3-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/intel/atom/sst-mfld-platform-pcm.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
index 4124aa2fc247..5db2f4865bbb 100644
--- a/sound/soc/intel/atom/sst-mfld-platform-pcm.c
+++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
@@ -127,7 +127,7 @@ static void sst_fill_alloc_params(struct snd_pcm_substream *substream,
snd_pcm_uframes_t period_size;
ssize_t periodbytes;
ssize_t buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
- u32 buffer_addr = virt_to_phys(substream->dma_buffer.area);
+ u32 buffer_addr = substream->runtime->dma_addr;
channels = substream->runtime->channels;
period_size = substream->runtime->period_size;
@@ -233,7 +233,6 @@ static int sst_platform_alloc_stream(struct snd_pcm_substream *substream,
/* set codec params and inform SST driver the same */
sst_fill_pcm_params(substream, &param);
sst_fill_alloc_params(substream, &alloc_params);
- substream->runtime->dma_area = substream->dma_buffer.area;
str_params.sparams = param;
str_params.aparams = alloc_params;
str_params.codec = SST_CODEC_TYPE_PCM;