6.6-stable review patch. If anyone has any objections, please let me know.
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From: Sean Nyekjaer sean@geanix.com
Commit 7346e7a058a2 ("pwm: stm32: Always do lazy disabling") triggered a regression where PWM polarity changes could be ignored.
stm32_pwm_set_polarity() was skipped due to a mismatch between the cached pwm->state.polarity and the actual hardware state, leaving the hardware polarity unchanged.
Fixes: 7edf7369205b ("pwm: Add driver for STM32 plaftorm") Cc: stable@vger.kernel.org # <= 6.12 Signed-off-by: Sean Nyekjaer sean@geanix.com Co-developed-by: Uwe Kleine-K�nig ukleinek@kernel.org Signed-off-by: Uwe Kleine-K�nig ukleinek@kernel.org --- drivers/pwm/pwm-stm32.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -462,8 +462,7 @@ static int stm32_pwm_apply(struct pwm_ch return 0; }
- if (state->polarity != pwm->state.polarity) - stm32_pwm_set_polarity(priv, pwm->hwpwm, state->polarity); + stm32_pwm_set_polarity(priv, pwm->hwpwm, state->polarity);
ret = stm32_pwm_config(priv, pwm->hwpwm, state->duty_cycle, state->period);