Messages in this thread Patch in this message | | | From | Fabrice Gasnier <> | Subject | [PATCH 2/3] iio: trigger: stm32-timer: fix a corner case to write preset | Date | Mon, 18 Sep 2017 12:05:31 +0200 |
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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> --- 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); -- 1.9.1
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