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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-07-04 18:19:21 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-07-04 18:19:21 +0300
commitc318a821b9828ef3be97d5d896d146e7daa43c86 (patch)
tree7ed40911ffebcbabf87ec4be692f6fb154053687 /include/linux/pwm.h
parent322832f2f19e04c866a0ce4bdac8cff8e695f2b3 (diff)
parenta99cde438de0c4c0cecc1d1af1a55a75b10bfdef (diff)
downloadlinux-c318a821b9828ef3be97d5d896d146e7daa43c86.tar.xz
Merge 4.7-rc6 into usb-next
We want the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/pwm.h')
-rw-r--r--include/linux/pwm.h16
1 files changed, 10 insertions, 6 deletions
diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index 908b67c847cd..c038ae36b10e 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -464,6 +464,8 @@ static inline bool pwm_can_sleep(struct pwm_device *pwm)
static inline void pwm_apply_args(struct pwm_device *pwm)
{
+ struct pwm_state state = { };
+
/*
* PWM users calling pwm_apply_args() expect to have a fresh config
* where the polarity and period are set according to pwm_args info.
@@ -476,18 +478,20 @@ static inline void pwm_apply_args(struct pwm_device *pwm)
* at startup (even if they are actually enabled), thus authorizing
* polarity setting.
*
- * Instead of setting ->enabled to false, we call pwm_disable()
- * before pwm_set_polarity() to ensure that everything is configured
- * as expected, and the PWM is really disabled when the user request
- * it.
+ * To fulfill this requirement, we apply a new state which disables
+ * the PWM device and set the reference period and polarity config.
*
* Note that PWM users requiring a smooth handover between the
* bootloader and the kernel (like critical regulators controlled by
* PWM devices) will have to switch to the atomic API and avoid calling
* pwm_apply_args().
*/
- pwm_disable(pwm);
- pwm_set_polarity(pwm, pwm->args.polarity);
+
+ state.enabled = false;
+ state.polarity = pwm->args.polarity;
+ state.period = pwm->args.period;
+
+ pwm_apply_state(pwm, &state);
}
struct pwm_lookup {