From 09a7e4a3d9fcb95ade2cb02167e85fbeb8315ce0 Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Thu, 14 Apr 2016 21:17:39 +0200 Subject: pwm: Move the enabled/disabled info into pwm_state Prepare the transition to PWM atomic update by moving the enabled and disabled state into the pwm_state struct. This way we can easily update the whole PWM state by copying the new state in the ->state field. Signed-off-by: Boris Brezillon Signed-off-by: Thierry Reding --- drivers/pwm/core.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index f3f91e716a42..c240b5437145 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -499,10 +499,10 @@ int pwm_enable(struct pwm_device *pwm) if (!pwm) return -EINVAL; - if (!test_and_set_bit(PWMF_ENABLED, &pwm->flags)) { + if (!pwm_is_enabled(pwm)) { err = pwm->chip->ops->enable(pwm->chip, pwm); - if (err) - clear_bit(PWMF_ENABLED, &pwm->flags); + if (!err) + pwm->state.enabled = true; } return err; @@ -515,8 +515,13 @@ EXPORT_SYMBOL_GPL(pwm_enable); */ void pwm_disable(struct pwm_device *pwm) { - if (pwm && test_and_clear_bit(PWMF_ENABLED, &pwm->flags)) + if (!pwm) + return; + + if (pwm_is_enabled(pwm)) { pwm->chip->ops->disable(pwm->chip, pwm); + pwm->state.enabled = false; + } } EXPORT_SYMBOL_GPL(pwm_disable); -- cgit v1.2.3