On Mon, 18 Sep 2017 12:05:31 +0200
Fabrice Gasnier <fabrice.gasnier@xxxxxx> 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@xxxxxx>
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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