diff options
| author | Takashi Iwai <tiwai@suse.de> | 2021-07-28 14:23:50 +0300 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2021-08-26 15:37:00 +0300 |
| commit | a13c9a954a784c93804f83b70ab4a756b99d5380 (patch) | |
| tree | 975c8ab9395328176db42102cbe97c65dd5adac5 /sound/soc | |
| parent | 6b13aec1ff29b30f404053eee55fca13d0c10540 (diff) | |
| download | linux-a13c9a954a784c93804f83b70ab4a756b99d5380.tar.xz | |
ASoC: intel: atom: Fix reference to PCM buffer address
commit 2e6b836312a477d647a7920b56810a5a25f6c856 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/intel/atom/sst-mfld-platform-pcm.c | 3 |
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 cdc0f22a57ee..c877326cb0a6 100644 --- a/sound/soc/intel/atom/sst-mfld-platform-pcm.c +++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c @@ -135,7 +135,7 @@ 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; @@ -241,7 +241,6 @@ 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, ¶m); 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; |