Instead of manually calculating the offset of the channels CCxE bit,
make use of the TIM_CCER_CCxE macro.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
---
 drivers/pwm/pwm-stm32.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c
index ec2c05c9ee7a..c6625f51a199 100644
--- a/drivers/pwm/pwm-stm32.c
+++ b/drivers/pwm/pwm-stm32.c
@@ -88,7 +88,7 @@ static int stm32_pwm_round_waveform_tohw(struct pwm_chip *chip,
 
 	rate = clk_get_rate(priv->clk);
 
-	if (active_channels(priv) & ~(1 << ch * 4)) {
+	if (active_channels(priv) & ~TIM_CCER_CCxE(ch + 1)) {
 		u64 arr;
 
 		/*
-- 
2.47.2