From e8c59791ebb60790c74b2c3ab520f04a8a57219a Mon Sep 17 00:00:00 2001 From: Mingwei Zheng Date: Sun, 15 Dec 2024 17:47:52 -0500 Subject: [PATCH] pwm: stm32: Add check for clk_enable() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Jiasheng Jiang Link: https://lore.kernel.org/r/20241215224752.220318-1-zmw12306@gmail.com Signed-off-by: Uwe Kleine-König --- 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 17e591f61efb6..a59de4de18b6e 100644 --- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -858,8 +858,11 @@ static int stm32_pwm_probe(struct platform_device *pdev) chip->ops = &stm32pwm_ops; /* 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 = devm_pwmchip_add(dev, chip); if (ret < 0)