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| author | Mingwei Zheng <zmw12306@gmail.com> | 2024-12-06 16:53:18 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-02-21 13:49:01 +0100 |
| commit | 78564038adab2a2163be591d731f3007c3d5c60c (patch) | |
| tree | a5308681bd3156551b352e25970fc44b347e2ec8 /drivers/pwm/pwm-stm32-lp.c | |
| parent | 2d9c5a72a963a2fb12ac9709b58352df326e0b23 (diff) | |
| download | linux-78564038adab2a2163be591d731f3007c3d5c60c.tar.gz linux-78564038adab2a2163be591d731f3007c3d5c60c.tar.bz2 linux-78564038adab2a2163be591d731f3007c3d5c60c.zip | |
pwm: stm32-lp: Add check for clk_enable()
[ Upstream commit cce16e7f6216227964cda25f5f23634bce2c500f ]
Add check for the return value of clk_enable() to catch the potential
error.
We used APP-Miner to find it.
Fixes: e70a540b4e02 ("pwm: Add STM32 LPTimer PWM driver")
Signed-off-by: Mingwei Zheng <zmw12306@gmail.com>
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@gmail.com>
Link: https://lore.kernel.org/r/20241206215318.3402860-1-zmw12306@gmail.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/pwm/pwm-stm32-lp.c')
| -rw-r--r-- | drivers/pwm/pwm-stm32-lp.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/pwm/pwm-stm32-lp.c b/drivers/pwm/pwm-stm32-lp.c index 31a185c6b8da..7f477082db1d 100644 --- a/drivers/pwm/pwm-stm32-lp.c +++ b/drivers/pwm/pwm-stm32-lp.c @@ -169,8 +169,12 @@ static int stm32_pwm_lp_get_state(struct pwm_chip *chip, regmap_read(priv->regmap, STM32_LPTIM_CR, &val); state->enabled = !!FIELD_GET(STM32_LPTIM_ENABLE, val); /* Keep PWM counter clock refcount in sync with PWM initial state */ - if (state->enabled) - clk_enable(priv->clk); + if (state->enabled) { + int ret = clk_enable(priv->clk); + + if (ret) + return ret; + } regmap_read(priv->regmap, STM32_LPTIM_CFGR, &val); presc = FIELD_GET(STM32_LPTIM_PRESC, val); |