Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2025-01-08 15:04:45 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

ALSA: hda: Use non-SG allocation for the communication buffers

Browse Source 
The azx_bus->dma_type is referred only for allocating the
communication buffers like CORB/RIRB, and the allocation size is
small.  Hence it doesn't have to be S/G buffer allocation, which is an
obvious overkill.  Use the standard SNDRV_DMA_TYPE_DEV_WC instead.

This was changed to SNDRV_DMA_TYPE_DEV_WC_SG in the commit
37137ec26c ("ALSA: hda: Once again fix regression of page
allocations with IOMMU") as a workaround for IOMMU-backed
allocations.  But this is no longer needed since the allocation with
SNDRV_DMA_TYPE_DEV_WC itself was fixed in the commit 9c27301342
("ALSA: memalloc: Use DMA API for x86 WC page allocations, too").

So this patch reverts the previous workaround in this piece of code.

Link: https://patch.msgid.link/20240909134744.25426-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2024-09-09 15:47:43 +02:00
parent 0a131eb855
commit 28fbfaf6bd
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sound/pci/hda/hda_intel.c
View File

@ -1821,7 +1821,7 @@ static int azx_create(struct snd_card *card, struct pci_dev *pci,
/* use the non-cached pages in non-snoop mode */
if (!azx_snoop(chip))
azx_bus(chip)->dma_type = SNDRV_DMA_TYPE_DEV_WC_SG;
azx_bus(chip)->dma_type = SNDRV_DMA_TYPE_DEV_WC;
if (chip->driver_type == AZX_DRIVER_NVIDIA) {
dev_dbg(chip->card->dev, "Enable delay in RIRB handling\n");