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| author | Jarkko Nikula <jarkko.nikula@linux.intel.com> | 2020-08-24 16:55:39 +0200 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2020-09-24 09:18:14 +0200 |
| commit | 1f2bd2271a105767046e02ecabd39a608270a4c6 (patch) | |
| tree | 0f75b0917d7ff30df9f650d69547bc41fdea4c31 | |
| parent | pwm: img: Fix null pointer access in probe (diff) | |
| download | linux-1f2bd2271a105767046e02ecabd39a608270a4c6.tar.xz linux-1f2bd2271a105767046e02ecabd39a608270a4c6.zip | |
pwm: Allow store 64-bit duty cycle from sysfs interface
PWM core was converted to u64 by the commit a9d887dc1c60 ("pwm: Convert
period and duty cycle to u64") but did not change the duty_cycle_store()
so it will error out if trying to pass a numeric string bigger than
2^32-1.
Fix this by using u64 and kstrtou64() in duty_cycle_store().
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: Guru Das Srinagesh <gurus@codeaurora.org>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| -rw-r--r-- | drivers/pwm/sysfs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/pwm/sysfs.c b/drivers/pwm/sysfs.c index 449dbc0f49ed..9903c3a7eced 100644 --- a/drivers/pwm/sysfs.c +++ b/drivers/pwm/sysfs.c @@ -87,10 +87,10 @@ static ssize_t duty_cycle_store(struct device *child, struct pwm_export *export = child_to_pwm_export(child); struct pwm_device *pwm = export->pwm; struct pwm_state state; - unsigned int val; + u64 val; int ret; - ret = kstrtouint(buf, 0, &val); + ret = kstrtou64(buf, 0, &val); if (ret) return ret; |