* [PATCH AUTOSEL 5.19 13/22] ALSA: hda/tegra: Align BDL entry to 4KB boundary
[not found] <20220914090103.470630-1-sashal@kernel.org>
@ 2022-09-14 9:00 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2022-09-14 9:00 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Mohan Kumar, Takashi Iwai, Sasha Levin, perex, tiwai,
thierry.reding, jonathanh, spujar, digetx, alsa-devel,
linux-tegra
From: Mohan Kumar <mkumard@nvidia.com>
[ Upstream commit 8d44e6044a0e885acdd01813768a0b27906d64fd ]
AZA HW may send a burst read/write request crossing 4K memory boundary.
The 4KB boundary is not guaranteed by Tegra HDA HW. Make SW change to
include the flag AZX_DCAPS_4K_BDLE_BOUNDARY to align BDLE to 4K
boundary.
Signed-off-by: Mohan Kumar <mkumard@nvidia.com>
Link: https://lore.kernel.org/r/20220905172420.3801-1-mkumard@nvidia.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/pci/hda/hda_tegra.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sound/pci/hda/hda_tegra.c b/sound/pci/hda/hda_tegra.c
index 7debb2c76aa62..976a112c7d006 100644
--- a/sound/pci/hda/hda_tegra.c
+++ b/sound/pci/hda/hda_tegra.c
@@ -474,7 +474,8 @@ MODULE_DEVICE_TABLE(of, hda_tegra_match);
static int hda_tegra_probe(struct platform_device *pdev)
{
const unsigned int driver_flags = AZX_DCAPS_CORBRP_SELF_CLEAR |
- AZX_DCAPS_PM_RUNTIME;
+ AZX_DCAPS_PM_RUNTIME |
+ AZX_DCAPS_4K_BDLE_BOUNDARY;
struct snd_card *card;
struct azx *chip;
struct hda_tegra *hda;
--
2.35.1
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2022-09-14 9:00 ` [PATCH AUTOSEL 5.19 13/22] ALSA: hda/tegra: Align BDL entry to 4KB boundary Sasha Levin
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