This is a note to let you know that I've just added the patch titled
pwm: stm32: Add check for clk_enable()
to the 5.15-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:
pwm-stm32-add-check-for-clk_enable.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3a96e70b8e700e704043a1d35f2fd18ad82177d8
Author: Mingwei Zheng <zmw12306@xxxxxxxxx>
Date: Sun Dec 15 17:47:52 2024 -0500
pwm: stm32: Add check for clk_enable()
[ Upstream commit e8c59791ebb60790c74b2c3ab520f04a8a57219a ]
Add check for the return value of clk_enable() to catch the potential
error.
Fixes: 19f1016ea960 ("pwm: stm32: Fix enable count for clk in .probe()")
Signed-off-by: Mingwei Zheng <zmw12306@xxxxxxxxx>
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@xxxxxxxxx>
Link: https://lore.kernel.org/r/20241215224752.220318-1-zmw12306@xxxxxxxxx
Signed-off-by: Uwe Kleine-König <ukleinek@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c
index 2070d107c6328..fda7d76f08b1b 100644
--- a/drivers/pwm/pwm-stm32.c
+++ b/drivers/pwm/pwm-stm32.c
@@ -631,8 +631,11 @@ static int stm32_pwm_probe(struct platform_device *pdev)
priv->chip.npwm = stm32_pwm_detect_channels(priv, &num_enabled);
/* Initialize clock refcount to number of enabled PWM channels. */
- for (i = 0; i < num_enabled; i++)
- clk_enable(priv->clk);
+ for (i = 0; i < num_enabled; i++) {
+ ret = clk_enable(priv->clk);
+ if (ret)
+ return ret;
+ }
ret = pwmchip_add(&priv->chip);
if (ret < 0)
