On 11/11/2020 11:38:07-0500, William Breathitt Gray wrote:
> The ATMEL_TC_ETRGEDG_* defines are not masks but rather possible values
> for CMR. This patch fixes the action_get() callback to properly check
> for these values rather than mask them.
>
> Fixes: 106b104137fd ("counter: Add microchip TCB capture counter")
> Cc: Kamel Bouhara <kamel.bouhara@xxxxxxxxxxx>
> Signed-off-by: William Breathitt Gray <vilhelm.gray@xxxxxxxxx>
Acked-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
> ---
> drivers/counter/microchip-tcb-capture.c | 16 ++++++++++------
> 1 file changed, 10 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/counter/microchip-tcb-capture.c b/drivers/counter/microchip-tcb-capture.c
> index 039c54a78aa5..142b389fc9db 100644
> --- a/drivers/counter/microchip-tcb-capture.c
> +++ b/drivers/counter/microchip-tcb-capture.c
> @@ -183,16 +183,20 @@ static int mchp_tc_count_action_get(struct counter_device *counter,
>
> regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], CMR), &cmr);
>
> - *action = MCHP_TC_SYNAPSE_ACTION_NONE;
> -
> - if (cmr & ATMEL_TC_ETRGEDG_NONE)
> + switch (cmr & ATMEL_TC_ETRGEDG_BOTH) {
> + default:
> *action = MCHP_TC_SYNAPSE_ACTION_NONE;
> - else if (cmr & ATMEL_TC_ETRGEDG_RISING)
> + break;
> + case ATMEL_TC_ETRGEDG_RISING:
> *action = MCHP_TC_SYNAPSE_ACTION_RISING_EDGE;
> - else if (cmr & ATMEL_TC_ETRGEDG_FALLING)
> + break;
> + case ATMEL_TC_ETRGEDG_FALLING:
> *action = MCHP_TC_SYNAPSE_ACTION_FALLING_EDGE;
> - else if (cmr & ATMEL_TC_ETRGEDG_BOTH)
> + break;
> + case ATMEL_TC_ETRGEDG_BOTH:
> *action = MCHP_TC_SYNAPSE_ACTION_BOTH_EDGE;
> + break;
> + }
>
> return 0;
> }
> --
> 2.29.2
>
--
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
