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authorZhen Ni <nizhen@uniontech.com>2022-03-02 15:42:41 +0800
committerTakashi Iwai <tiwai@suse.de>2022-03-02 09:25:37 +0100
commit0aa6b294b312d9710804679abd2c0c8ca52cc2bc (patch)
tree76f93ef959ba6fc672e9ac40e8c2c128dbc4378c
parentce345f1e48458837a5b064cac94382c095e00e79 (diff)
ALSA: intel_hdmi: 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 driver needs to refer to substream->runtime->dma_addr instead for the buffer address. Signed-off-by: Zhen Ni <nizhen@uniontech.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20220302074241.30469-1-nizhen@uniontech.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/x86/intel_hdmi_audio.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c
index 1c94eaff1931..4a3ff6468aa7 100644
--- a/sound/x86/intel_hdmi_audio.c
+++ b/sound/x86/intel_hdmi_audio.c
@@ -1261,7 +1261,7 @@ static int had_pcm_mmap(struct snd_pcm_substream *substream,
{
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
return remap_pfn_range(vma, vma->vm_start,
- substream->dma_buffer.addr >> PAGE_SHIFT,
+ substream->runtime->dma_addr >> PAGE_SHIFT,
vma->vm_end - vma->vm_start, vma->vm_page_prot);
}