For non-x86 architectures, SNDRV_DMA_TYPE_DEV_UC should be treated equivalent with SNDRV_DMA_TYPE_DEV, where the default mmap handler still checks only about SNDRV_DMA_TYPE_DEV. Make the check more proper.
Note that all existing users of *_UC buffer types are x86-only, so this doesn't fix any bug, but just for consistency.
Fixes: 42e748a0b325 ("ALSA: memalloc: Add non-cached buffer type") Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/core/pcm_native.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 998c63192ae4..0c27009dc3df 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -3416,7 +3416,8 @@ int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream, #endif /* CONFIG_GENERIC_ALLOCATOR */ #ifndef CONFIG_X86 /* for avoiding warnings arch/x86/mm/pat.c */ if (IS_ENABLED(CONFIG_HAS_DMA) && !substream->ops->page && - substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV) + (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV || + substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV_UC)) return dma_mmap_coherent(substream->dma_buffer.dev.dev, area, substream->runtime->dma_area,