mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-02 23:27:06 +00:00
ALSA: intel_hdmi: Fix reference to PCM buffer address
commit 0aa6b294b3
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 <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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
e57dfaf66f
commit
336872601c
1 changed files with 1 additions and 1 deletions
|
@ -1276,7 +1276,7 @@ static int had_pcm_mmap(struct snd_pcm_substream *substream,
|
||||||
{
|
{
|
||||||
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
|
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
|
||||||
return remap_pfn_range(vma, vma->vm_start,
|
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);
|
vma->vm_end - vma->vm_start, vma->vm_page_prot);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in a new issue