pwm: tiehrpwm: Make code comment in .free() more useful

Instead of explaining trivia to everyone who can read C describe the
higher-level effect of setting pc->period_cycles[pwm->hwpwm] to zero.

Fixes: 01b2d4536f02 ("pwm: pwm-tiehrpwm: Fix conflicting channel period setting")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/4c38dd119a77d7017115318a3f2c50bde62a6f21.1754927682.git.u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>

diff --git a/drivers/pwm/pwm-tiehrpwm.c b/drivers/pwm/pwm-tiehrpwm.c
index 5e674a7bbf3bec436de6f68955531b58434d30fd..a94b1e387b924dbb45506ee8ab0301a66a7af63c 100644 (file)
--- a/drivers/pwm/pwm-tiehrpwm.c
+++ b/drivers/pwm/pwm-tiehrpwm.c
@@ -391,7 +391,7 @@ static void ehrpwm_pwm_free(struct pwm_chip *chip, struct pwm_device *pwm)
 {
        struct ehrpwm_pwm_chip *pc = to_ehrpwm_pwm_chip(chip);
 
-       /* set period value to zero on free */
+       /* Don't let a pwm without consumer block requests to the other channel */
        pc->period_cycles[pwm->hwpwm] = 0;
 }