ASoC: SOF: hda: Set max DMA segment size
authorTakashi Iwai <tiwai@suse.de>
Tue, 15 Feb 2022 13:27:55 +0000 (14:27 +0100)
committerTakashi Iwai <tiwai@suse.de>
Thu, 17 Feb 2022 08:39:10 +0000 (09:39 +0100)
The recent code refactoring to use the standard DMA helper requires
the max DMA segment size setup for SG list management. Without it,
the kernel may spew warnings when a large buffer is allocated.

This patch sets up dma_set_max_seg_size() for avoiding spurious
warnings.

Fixes: 2c95b92ecd92 ("ALSA: memalloc: Unify x86 SG-buffer handling (take#3)")
Acked-by: Mark Brown <broonie@kernel.org>
Cc: <stable@vger.kernel.org>
BugLink: https://github.com/thesofproject/linux/issues/3430
Link: https://lore.kernel.org/r/20220215132756.31236-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/soc/sof/intel/hda.c

index c8fb082..1385695 100644 (file)
@@ -956,6 +956,7 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
                dev_dbg(sdev->dev, "DMA mask is 32 bit\n");
                dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32));
        }
+       dma_set_max_seg_size(&pci->dev, UINT_MAX);
 
        /* init streams */
        ret = hda_dsp_stream_init(sdev);