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| author |   William Breathitt Gray <vilhelm.gray@gmail.com> | 2020-11-14 18:28:05 -0500 |
|---|---|---|
| committer |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2020-12-03 19:40:31 +0000 |
| commit | 3418bd7cfce0bd8ef1ccedc4655f9f86f6c3b0ca (patch) | |
| tree | 17746127fea3e8a8794f72b53fd0fef5b9a0f2be /drivers/counter | |
| parent | iio: sysfs-trigger: Mark irq_work to expire in hardirq context (diff) | |
| download | linux-dev-3418bd7cfce0bd8ef1ccedc4655f9f86f6c3b0ca.tar.xz linux-dev-3418bd7cfce0bd8ef1ccedc4655f9f86f6c3b0ca.zip | |
counter: microchip-tcb-capture: Fix CMR value check
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")
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Kamel Bouhara <kamel.bouhara@bootlin.com>
Cc: <Stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20201114232805.253108-1-vilhelm.gray@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/counter')
| -rw-r--r-- | drivers/counter/microchip-tcb-capture.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/counter/microchip-tcb-capture.c b/drivers/counter/microchip-tcb-capture.c index 039c54a78aa5..710acc0a3704 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) { + 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; } |