This is a note to let you know that I've just added the patch titled
ALSA: hda/tas2781: reset the amp before component_add
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
alsa-hda-tas2781-reset-the-amp-before-component_add.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 315deab289924c83ab1ded50022e8db95d6e428b Mon Sep 17 00:00:00 2001
From: Gergo Koteles <soyer@xxxxxx>
Date: Thu, 14 Dec 2023 00:49:20 +0100
Subject: ALSA: hda/tas2781: reset the amp before component_add
From: Gergo Koteles <soyer@xxxxxx>
commit 315deab289924c83ab1ded50022e8db95d6e428b upstream.
Calling component_add starts loading the firmware, the callback function
writes the program to the amplifiers. If the module resets the
amplifiers after component_add, it happens that one of the amplifiers
does not work because the reset and program writing are interleaving.
Call tas2781_reset before component_add to ensure reliable
initialization.
Fixes: 5be27f1e3ec9 ("ALSA: hda/tas2781: Add tas2781 HDA driver")
CC: stable@xxxxxxxxxxxxxxx
Signed-off-by: Gergo Koteles <soyer@xxxxxx>
Link: https://lore.kernel.org/r/4d23bf58558e23ee8097de01f70f1eb8d9de2d15.1702511246.git.soyer@xxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/pci/hda/tas2781_hda_i2c.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sound/pci/hda/tas2781_hda_i2c.c b/sound/pci/hda/tas2781_hda_i2c.c
index c8ee5f809c38..63a90c7e8976 100644
--- a/sound/pci/hda/tas2781_hda_i2c.c
+++ b/sound/pci/hda/tas2781_hda_i2c.c
@@ -674,14 +674,14 @@ static int tas2781_hda_i2c_probe(struct i2c_client *clt)
pm_runtime_put_autosuspend(tas_priv->dev);
+ tas2781_reset(tas_priv);
+
ret = component_add(tas_priv->dev, &tas2781_hda_comp_ops);
if (ret) {
dev_err(tas_priv->dev, "Register component failed: %d\n", ret);
pm_runtime_disable(tas_priv->dev);
- goto err;
}
- tas2781_reset(tas_priv);
err:
if (ret)
tas2781_hda_remove(&clt->dev);
--
2.43.0
Patches currently in stable-queue which might be from soyer@xxxxxx are
queue-6.6/alsa-hda-tas2781-handle-missing-efi-calibration-data.patch
queue-6.6/alsa-hda-tas2781-call-cleanup-functions-only-once.patch
queue-6.6/alsa-hda-tas2781-leave-hda_component-in-usable-state.patch
queue-6.6/alsa-hda-tas2781-reset-the-amp-before-component_add.patch
