Re: [PATCH 1/5] ALSA: hda: cs35l41: Avoid overwriting register patch

From: Cezary Rojewski
Date: Fri Jan 14 2022 - 11:08:59 EST


On 2022-01-13 6:07 PM, Lucas Tanure wrote:
From: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>

regmap_register_patch can't be used to apply the probe sequence as a
patch is already registers with the regmap by
cs35l41_register_errata_patch and only a single patch can be attached to
a single regmap. The driver doesn't currently rely on a cache sync to
re-apply this probe sequence so simply switch it to a multi write.

Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Lucas Tanure <tanureal@xxxxxxxxxxxxxxxxxxxxx>

Please correct me if I'm wrong, but this change looks like a fix for the previously added commit:
ALSA: hda: cs35l41: Add support for CS35L41 in HDA systems

and so it would be good to append appropriate 'Fixes' tag here.

---
sound/pci/hda/cs35l41_hda.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/pci/hda/cs35l41_hda.c b/sound/pci/hda/cs35l41_hda.c
index 30b40d865863..c47c5f0b4e59 100644
--- a/sound/pci/hda/cs35l41_hda.c
+++ b/sound/pci/hda/cs35l41_hda.c
@@ -480,7 +480,7 @@ int cs35l41_hda_probe(struct device *dev, const char *device_name, int id, int i
acpi_hw_cfg = NULL;
if (cs35l41->reg_seq->probe) {
- ret = regmap_register_patch(cs35l41->regmap, cs35l41->reg_seq->probe,
+ ret = regmap_multi_reg_write(cs35l41->regmap, cs35l41->reg_seq->probe,
cs35l41->reg_seq->num_probe);
if (ret) {
dev_err(cs35l41->dev, "Fail to apply probe reg patch: %d\n", ret);