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pwm: Fixes for v5.4-rc6 

It turned out that relying solely on drivers storing all the PWM state
 in hardware was a little premature and causes a number of subtle (and
 some not so subtle) regressions. Revert the offending patch for now.
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Merge tag 'pwm/for-5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm fixes from Thierry Reding:
 "It turned out that relying solely on drivers storing all the PWM state
  in hardware was a little premature and causes a number of subtle (and
  some not so subtle) regressions. Revert the offending patch for now"

* tag 'pwm/for-5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  Revert "pwm: Let pwm_get_state() return the last implemented state"
This commit is contained in:
Linus Torvalds 2019-11-02 11:23:09 -07:00
parent f83e148a41 40a6b9a009
commit e935842a06
1 changed files with 1 additions and 8 deletions
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9
drivers/pwm/core.c
View File

@ -472,14 +472,7 @@ int pwm_apply_state(struct pwm_device *pwm, const struct pwm_state *state)
if (err)
return err;
/*
* .apply might have to round some values in *state, if possible
* read the actually implemented value back.
*/
if (chip->ops->get_state)
chip->ops->get_state(chip, pwm, &pwm->state);
else
pwm->state = *state;
pwm->state = *state;
} else {
/*
* FIXME: restore the initial state in case of error.