diff options
| author | Mingwei Zheng <zmw12306@gmail.com> | 2024-12-15 17:47:52 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-02-08 09:52:02 +0100 |
| commit | c7efca80bdecaff7aac710a0cd508670181e0366 (patch) | |
| tree | 23e7fb2e31dc19cff306c6a8974315d2da68f351 | |
| parent | b8e33f0a3c86795f6d7542df953616d9c6da4581 (diff) | |
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@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>
| -rw-r--r-- | drivers/pwm/pwm-stm32.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c index b91a14c895be..67414b97ef4d 100644 --- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -635,8 +635,11 @@ 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 = devm_pwmchip_add(dev, &priv->chip); if (ret < 0) |