FAILED: patch "[PATCH] ASoC: codecs: wsa881x: fix unnecessary initialisation" failed to apply to 6.6-stable tree

FAILED: patch "[PATCH] ASoC: codecs: wsa881x: fix unnecessary initialisation" failed to apply to 6.6-stable tree

[gregkh]

The patch below does not apply to the 6.6-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y
git checkout FETCH_HEAD
git cherry-pick -x 29d71b8a5a40708b3eed9ba4953bfc2312c9c776
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026012028-unclamped-unfrozen-60bd@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 29d71b8a5a40708b3eed9ba4953bfc2312c9c776 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Fri, 2 Jan 2026 12:14:11 +0100
Subject: [PATCH] ASoC: codecs: wsa881x: fix unnecessary initialisation

The soundwire update_status() callback may be called multiple times with
the same ATTACHED status but initialisation should only be done when
transitioning from UNATTACHED to ATTACHED.

Fixes: a0aab9e1404a ("ASoC: codecs: add wsa881x amplifier support")
Cc: stable@vger.kernel.org	# 5.6
Cc: Srinivas Kandagatla <srini@kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
Link: https://patch.msgid.link/20260102111413.9605-3-johan@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/wsa881x.c b/sound/soc/codecs/wsa881x.c
index d7aca6567c2d..2fc234adca5f 100644
--- a/sound/soc/codecs/wsa881x.c
+++ b/sound/soc/codecs/wsa881x.c
@@ -678,6 +678,7 @@ struct wsa881x_priv {
 	 */
 	unsigned int sd_n_val;
 	int active_ports;
+	bool hw_init;
 	bool port_prepared[WSA881X_MAX_SWR_PORTS];
 	bool port_enable[WSA881X_MAX_SWR_PORTS];
 };
@@ -687,6 +688,9 @@ static void wsa881x_init(struct wsa881x_priv *wsa881x)
 	struct regmap *rm = wsa881x->regmap;
 	unsigned int val = 0;
 
+	if (wsa881x->hw_init)
+		return;
+
 	regmap_register_patch(wsa881x->regmap, wsa881x_rev_2_0,
 			      ARRAY_SIZE(wsa881x_rev_2_0));
 
@@ -724,6 +728,8 @@ static void wsa881x_init(struct wsa881x_priv *wsa881x)
 	regmap_update_bits(rm, WSA881X_OTP_REG_28, 0x3F, 0x3A);
 	regmap_update_bits(rm, WSA881X_BONGO_RESRV_REG1, 0xFF, 0xB2);
 	regmap_update_bits(rm, WSA881X_BONGO_RESRV_REG2, 0xFF, 0x05);
+
+	wsa881x->hw_init = true;
 }
 
 static int wsa881x_component_probe(struct snd_soc_component *comp)
@@ -1067,6 +1073,9 @@ static int wsa881x_update_status(struct sdw_slave *slave,
 {
 	struct wsa881x_priv *wsa881x = dev_get_drvdata(&slave->dev);
 
+	if (status == SDW_SLAVE_UNATTACHED)
+		wsa881x->hw_init = false;
+
 	if (status == SDW_SLAVE_ATTACHED && slave->dev_num > 0)
 		wsa881x_init(wsa881x);
 

[PATCH 6.6.y 1/2] ASoC: codecs: wsa881x: Drop unused version readout

[Sasha Levin]

From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

[ Upstream commit 3d2a69eb503d15171a7ba51cf0b562728ac396b7 ]

Driver does not use the device version after reading it from the
registers, so simplify by dropping unneeded code.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20240710-asoc-wsa88xx-version-v1-1-f1c54966ccde@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Stable-dep-of: 29d71b8a5a40 ("ASoC: codecs: wsa881x: fix unnecessary initialisation")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/codecs/wsa881x.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/sound/soc/codecs/wsa881x.c b/sound/soc/codecs/wsa881x.c
index 53b828f681020..2b0c26664762f 100644
--- a/sound/soc/codecs/wsa881x.c
+++ b/sound/soc/codecs/wsa881x.c
@@ -680,7 +680,6 @@ struct wsa881x_priv {
 	 * For backwards compatibility.
 	 */
 	unsigned int sd_n_val;
-	int version;
 	int active_ports;
 	bool port_prepared[WSA881X_MAX_SWR_PORTS];
 	bool port_enable[WSA881X_MAX_SWR_PORTS];
@@ -691,7 +690,6 @@ static void wsa881x_init(struct wsa881x_priv *wsa881x)
 	struct regmap *rm = wsa881x->regmap;
 	unsigned int val = 0;
 
-	regmap_read(rm, WSA881X_CHIP_ID1, &wsa881x->version);
 	regmap_register_patch(wsa881x->regmap, wsa881x_rev_2_0,
 			      ARRAY_SIZE(wsa881x_rev_2_0));
 
-- 
2.51.0

[PATCH 6.6.y 2/2] ASoC: codecs: wsa881x: fix unnecessary initialisation

[Sasha Levin]

From: Johan Hovold <johan@kernel.org>

[ Upstream commit 29d71b8a5a40708b3eed9ba4953bfc2312c9c776 ]

The soundwire update_status() callback may be called multiple times with
the same ATTACHED status but initialisation should only be done when
transitioning from UNATTACHED to ATTACHED.

Fixes: a0aab9e1404a ("ASoC: codecs: add wsa881x amplifier support")
Cc: stable@vger.kernel.org	# 5.6
Cc: Srinivas Kandagatla <srini@kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
Link: https://patch.msgid.link/20260102111413.9605-3-johan@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/codecs/wsa881x.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/sound/soc/codecs/wsa881x.c b/sound/soc/codecs/wsa881x.c
index 2b0c26664762f..c1f1414aa5121 100644
--- a/sound/soc/codecs/wsa881x.c
+++ b/sound/soc/codecs/wsa881x.c
@@ -681,6 +681,7 @@ struct wsa881x_priv {
 	 */
 	unsigned int sd_n_val;
 	int active_ports;
+	bool hw_init;
 	bool port_prepared[WSA881X_MAX_SWR_PORTS];
 	bool port_enable[WSA881X_MAX_SWR_PORTS];
 };
@@ -690,6 +691,9 @@ static void wsa881x_init(struct wsa881x_priv *wsa881x)
 	struct regmap *rm = wsa881x->regmap;
 	unsigned int val = 0;
 
+	if (wsa881x->hw_init)
+		return;
+
 	regmap_register_patch(wsa881x->regmap, wsa881x_rev_2_0,
 			      ARRAY_SIZE(wsa881x_rev_2_0));
 
@@ -727,6 +731,8 @@ static void wsa881x_init(struct wsa881x_priv *wsa881x)
 	regmap_update_bits(rm, WSA881X_OTP_REG_28, 0x3F, 0x3A);
 	regmap_update_bits(rm, WSA881X_BONGO_RESRV_REG1, 0xFF, 0xB2);
 	regmap_update_bits(rm, WSA881X_BONGO_RESRV_REG2, 0xFF, 0x05);
+
+	wsa881x->hw_init = true;
 }
 
 static int wsa881x_component_probe(struct snd_soc_component *comp)
@@ -1071,6 +1077,9 @@ static int wsa881x_update_status(struct sdw_slave *slave,
 {
 	struct wsa881x_priv *wsa881x = dev_get_drvdata(&slave->dev);
 
+	if (status == SDW_SLAVE_UNATTACHED)
+		wsa881x->hw_init = false;
+
 	if (status == SDW_SLAVE_ATTACHED && slave->dev_num > 0)
 		wsa881x_init(wsa881x);
 
-- 
2.51.0