linux-kernel - [PATCH] MFD: mt6397: do not use generic name for keypad sub-devices

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Message-ID: <r4k3pgd3ew3ypne7ernxuzwgniiyvzosbce4cfajbcu7equblt@yato35tjb3lw>
Date: Mon, 30 Jun 2025 16:01:06 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: Lee Jones <lee@...nel.org>
Cc: Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Yassine Oudjana <y.oudjana@...tonmail.com>,
	Nícolas F. R. A. Prado <nfraprado@...labora.com>,
	Fabien Parent <fparent@...libre.com>,
	Reported-by@....codeaurora.org:Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: [PATCH] MFD: mt6397: do not use generic name for keypad sub-devices

Do not use "mtk-pmic-keys" when creating sub-device for the keypad to
make sure the keypad driver will only bind to the sub-device if it has
support for the variant/has matching compatible.

Reported-by: Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>
Fixes: 6e31bb8d3a63 ("mfd: mt6397: Add initial support for MT6328")
Fixes: de58cee8c6b8 ("mfd: mt6397-core: Add MT6357 PMIC support")
Fixes: 4a901e305011 ("mfd: mt6397-core: Add resources for PMIC keys for MT6359")
Cc: stable@...r.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---

This is not tested so if someone with hardware could try it out that
would be great. I *think* it should work...

 drivers/mfd/mt6397-core.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c
index 5f8ed8988907..3e58d0764c7e 100644
--- a/drivers/mfd/mt6397-core.c
+++ b/drivers/mfd/mt6397-core.c
@@ -136,7 +136,7 @@ static const struct mfd_cell mt6323_devs[] = {
 		.name = "mt6323-led",
 		.of_compatible = "mediatek,mt6323-led"
 	}, {
-		.name = "mtk-pmic-keys",
+		.name = "mt6323-keys",
 		.num_resources = ARRAY_SIZE(mt6323_keys_resources),
 		.resources = mt6323_keys_resources,
 		.of_compatible = "mediatek,mt6323-keys"
@@ -153,7 +153,7 @@ static const struct mfd_cell mt6328_devs[] = {
 		.name = "mt6328-regulator",
 		.of_compatible = "mediatek,mt6328-regulator"
 	}, {
-		.name = "mtk-pmic-keys",
+		.name = "mt6328-keys",
 		.num_resources = ARRAY_SIZE(mt6328_keys_resources),
 		.resources = mt6328_keys_resources,
 		.of_compatible = "mediatek,mt6328-keys"
@@ -175,7 +175,7 @@ static const struct mfd_cell mt6357_devs[] = {
 		.name = "mt6357-sound",
 		.of_compatible = "mediatek,mt6357-sound"
 	}, {
-		.name = "mtk-pmic-keys",
+		.name = "mt6357-keys",
 		.num_resources = ARRAY_SIZE(mt6357_keys_resources),
 		.resources = mt6357_keys_resources,
 		.of_compatible = "mediatek,mt6357-keys"
@@ -196,7 +196,7 @@ static const struct mfd_cell mt6331_mt6332_devs[] = {
 		.name = "mt6332-regulator",
 		.of_compatible = "mediatek,mt6332-regulator"
 	}, {
-		.name = "mtk-pmic-keys",
+		.name = "mt6331-keys",
 		.num_resources = ARRAY_SIZE(mt6331_keys_resources),
 		.resources = mt6331_keys_resources,
 		.of_compatible = "mediatek,mt6331-keys"
@@ -240,7 +240,7 @@ static const struct mfd_cell mt6359_devs[] = {
 	},
 	{ .name = "mt6359-sound", },
 	{
-		.name = "mtk-pmic-keys",
+		.name = "mt6359-keys",
 		.num_resources = ARRAY_SIZE(mt6359_keys_resources),
 		.resources = mt6359_keys_resources,
 		.of_compatible = "mediatek,mt6359-keys"
@@ -272,7 +272,7 @@ static const struct mfd_cell mt6397_devs[] = {
 		.name = "mt6397-pinctrl",
 		.of_compatible = "mediatek,mt6397-pinctrl",
 	}, {
-		.name = "mtk-pmic-keys",
+		.name = "mt6397-keys",
 		.num_resources = ARRAY_SIZE(mt6397_keys_resources),
 		.resources = mt6397_keys_resources,
 		.of_compatible = "mediatek,mt6397-keys"
-- 
2.50.0.727.gbf7dc18ff4-goog


-- 
Dmitry