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pwm: Return -EINVAL for old-style drivers without .set_polarity callback

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Since commit 2b1c1a5d51 ("pwm: Use -EINVAL for unsupported polarity")
all drivers implementing the apply callback are unified to return
-EINVAL if an unsupported polarity is requested. Do the same in the
compat code for old-style drivers.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Uwe Kleine-König 2021-03-01 19:23:07 +01:00 committed by Thierry Reding
parent f9a8ee8c8b
commit d58cb0ee51
1 changed files with 1 additions and 1 deletions
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2
drivers/pwm/core.c
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@ -596,7 +596,7 @@ int pwm_apply_state(struct pwm_device *pwm, const struct pwm_state *state)
*/
if (state->polarity != pwm->state.polarity) {
if (!chip->ops->set_polarity)
return -ENOTSUPP;
return -EINVAL;
/*
* Changing the polarity of a running PWM is