On 2022-02-15 2:27 PM, Takashi Iwai wrote:
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.
Thanks for accounting for skylake-driver when providing fixes.
Acked-by: Cezary Rojewski <cezary.rojewski@xxxxxxxxx>
Fixes: 2c95b92ecd92 ("ALSA: memalloc: Unify x86 SG-buffer handling (take#3)")
Cc: <stable@xxxxxxxxxxxxxxx>
BugLink: https://github.com/thesofproject/linux/issues/3430
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
sound/soc/intel/skylake/skl.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c
index 148ddf4cace0..aeca58246fc7 100644
--- a/sound/soc/intel/skylake/skl.c
+++ b/sound/soc/intel/skylake/skl.c
@@ -952,6 +952,7 @@ static int skl_first_init(struct hdac_bus *bus)
/* allow 64bit DMA address if supported by H/W */
if (dma_set_mask_and_coherent(bus->dev, DMA_BIT_MASK(64)))
dma_set_mask_and_coherent(bus->dev, DMA_BIT_MASK(32));
+ dma_set_max_seg_size(bus->dev, UINT_MAX);
/* initialize streams */
snd_hdac_ext_stream_init_all
