[openwrt/openwrt] airoha: pwm: use devm

[LEDE Commits]

ansuel pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/aa4c96b9250c06d07cde145441e391453f87ccb2

commit aa4c96b9250c06d07cde145441e391453f87ccb2
Author: Rosen Penev <rosenp at gmail.com>
AuthorDate: Sat Apr 26 16:48:12 2025 -0700

    airoha: pwm: use devm
    
    Removes the need for a remove function in platform_device.
    
    Signed-off-by: Rosen Penev <rosenp at gmail.com>
    Link: https://github.com/openwrt/openwrt/pull/18660
    Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
---
 .../108-pwm-airoha-Add-support-for-EN7581-SoC.patch      | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/target/linux/airoha/patches-6.6/108-pwm-airoha-Add-support-for-EN7581-SoC.patch b/target/linux/airoha/patches-6.6/108-pwm-airoha-Add-support-for-EN7581-SoC.patch
index 8f83c696c4..0b114d5f53 100644
--- a/target/linux/airoha/patches-6.6/108-pwm-airoha-Add-support-for-EN7581-SoC.patch
+++ b/target/linux/airoha/patches-6.6/108-pwm-airoha-Add-support-for-EN7581-SoC.patch
@@ -48,7 +48,7 @@ Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
  obj-$(CONFIG_PWM_ATMEL_HLCDC_PWM)	+= pwm-atmel-hlcdc.o
 --- /dev/null
 +++ b/drivers/pwm/pwm-airoha.c
-@@ -0,0 +1,400 @@
+@@ -0,0 +1,388 @@
 +// SPDX-License-Identifier: GPL-2.0
 +/*
 + * Copyright 2022 Markus Gothe <markus.gothe at genexis.eu>
@@ -414,18 +414,7 @@ Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
 +	if (IS_ERR(pc->regmap))
 +		return PTR_ERR(pc->regmap);
 +
-+	platform_set_drvdata(pdev, pc);
-+
-+	return pwmchip_add(&pc->chip);
-+}
-+
-+static int airoha_pwm_remove(struct platform_device *pdev)
-+{
-+	struct airoha_pwm *pc = platform_get_drvdata(pdev);
-+
-+	pwmchip_remove(&pc->chip);
-+
-+	return 0;
++	return devm_pwmchip_add(&pdev->dev, &pc->chip);
 +}
 +
 +static const struct of_device_id airoha_pwm_of_match[] = {
@@ -440,7 +429,6 @@ Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
 +		.of_match_table = airoha_pwm_of_match,
 +	},
 +	.probe = airoha_pwm_probe,
-+	.remove = airoha_pwm_remove,
 +};
 +module_platform_driver(airoha_pwm_driver);
 +