6.1-stable review patch. If anyone has any objections, please let me know.
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From: Mingwei Zheng zmw12306@gmail.com
[ 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@gmail.com Signed-off-by: Jiasheng Jiang jiashengjiangcool@gmail.com Link: https://lore.kernel.org/r/20241215224752.220318-1-zmw12306@gmail.com Signed-off-by: Uwe Kleine-König ukleinek@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pwm/pwm-stm32.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
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)