From 336872601cb8eb2b09bccbae81b7354d5fbd1cca Mon Sep 17 00:00:00 2001 From: Zhen Ni Date: Wed, 2 Mar 2022 15:42:41 +0800 Subject: [PATCH] ALSA: intel_hdmi: Fix reference to PCM buffer address commit 0aa6b294b312d9710804679abd2c0c8ca52cc2bc 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 driver needs to refer to substream->runtime->dma_addr instead for the buffer address. Signed-off-by: Zhen Ni Cc: Link: https://lore.kernel.org/r/20220302074241.30469-1-nizhen@uniontech.com Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/x86/intel_hdmi_audio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c index 9f9fcd2749f2..dbaa43ffbbd2 100644 --- a/sound/x86/intel_hdmi_audio.c +++ b/sound/x86/intel_hdmi_audio.c @@ -1276,7 +1276,7 @@ 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); }