Hi Anand, > Below changes depend on following patch. > https://patchwork.kernel.org/patch/5944061/ > > Update the pwm_config with duty then update the pwm_disable > to poweroff the cpu fan. > > Tested on OdroidXU3 board. > > Signed-off-by: Anand Moon <linux.am...@gmail.com> > --- > drivers/hwmon/pwm-fan.c | 10 ++++------ > 1 file changed, 4 insertions(+), 6 deletions(-) > > diff --git a/drivers/hwmon/pwm-fan.c b/drivers/hwmon/pwm-fan.c > index 7c83dc4..f25c841 100644 > --- a/drivers/hwmon/pwm-fan.c > +++ b/drivers/hwmon/pwm-fan.c > @@ -44,26 +44,24 @@ static int __set_pwm(struct pwm_fan_ctx *ctx, > unsigned long pwm) int ret = 0; > > mutex_lock(&ctx->lock); > + > if (ctx->pwm_value == pwm) > goto exit_set_pwm_err; > > - if (pwm == 0) { > - pwm_disable(ctx->pwm); > - goto exit_set_pwm; > - } > - > duty = DIV_ROUND_UP(pwm * (ctx->pwm->period - 1), MAX_PWM); > ret = pwm_config(ctx->pwm, duty, ctx->pwm->period); > if (ret) > goto exit_set_pwm_err; > > + if (pwm == 0) > + pwm_disable(ctx->pwm); > + > if (ctx->pwm_value == 0) { > ret = pwm_enable(ctx->pwm); > if (ret) > goto exit_set_pwm_err; > } > > -exit_set_pwm: > ctx->pwm_value = pwm; > exit_set_pwm_err: > mutex_unlock(&ctx->lock);
Reviewed-by: Lukasz Majewski <l.majew...@samsung.com> BTW: I've added Guenter to CC. -- Best regards, Lukasz Majewski Samsung R&D Institute Poland (SRPOL) | Linux Platform Group -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
