diff options
| author | Mingwei Zheng <[email protected]> | 2024-12-06 21:53:18 +0000 |
|---|---|---|
| committer | Uwe Kleine-König <[email protected]> | 2024-12-18 10:12:05 +0000 |
| commit | cce16e7f6216227964cda25f5f23634bce2c500f (patch) | |
| tree | 7a5f1823d6f8754fb04640be845a322e57f45ac9 /drivers/pwm/pwm-stm32-lp.c | |
| parent | dt-bindings: pwm: marvell,berlin-pwm: Convert from txt to yaml (diff) | |
| download | kernel-cce16e7f6216227964cda25f5f23634bce2c500f.tar.gz kernel-cce16e7f6216227964cda25f5f23634bce2c500f.zip | |
pwm: stm32-lp: Add check for clk_enable()
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 <[email protected]>
Signed-off-by: Jiasheng Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>
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 989731256f50..5832dce8ed9d 100644 --- a/drivers/pwm/pwm-stm32-lp.c +++ b/drivers/pwm/pwm-stm32-lp.c @@ -167,8 +167,12 @@ 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); |