Messages in this thread | | | Date | Sun, 24 Sep 2017 13:10:27 +0100 | From | Jonathan Cameron <> | Subject | Re: [PATCH 2/3] iio: trigger: stm32-timer: fix a corner case to write preset |
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On Mon, 18 Sep 2017 12:05:31 +0200 Fabrice Gasnier <fabrice.gasnier@st.com> wrote:
> Balance timer start routine that sets ARPE: clear it in stop routine. > This fixes a corner case, when timer is used successively as trigger > (with sampling_frequency start/stop routines), then as a counter > (with preset). > > Fixes: 93fbe91b5521 ("iio: Add STM32 timer trigger driver") > > Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Applied to the fixes-togreg-post-rc1 branch of iio.git and marked for stable.
Thanks,
Jonathan > --- > drivers/iio/trigger/stm32-timer-trigger.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/iio/trigger/stm32-timer-trigger.c b/drivers/iio/trigger/stm32-timer-trigger.c > index 34cc25b..eb212f8c 100644 > --- a/drivers/iio/trigger/stm32-timer-trigger.c > +++ b/drivers/iio/trigger/stm32-timer-trigger.c > @@ -174,6 +174,7 @@ static void stm32_timer_stop(struct stm32_timer_trigger *priv) > clk_disable(priv->clk); > > /* Stop timer */ > + regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_ARPE, 0); > regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_CEN, 0); > regmap_write(priv->regmap, TIM_PSC, 0); > regmap_write(priv->regmap, TIM_ARR, 0);
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