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From: William Breathitt Gray <vilhelm.gray@gmail.com>
To: jic23@kernel.org
Cc: robh+dt@kernel.org, alexandre.belloni@bootlin.com,
	linux-arm-kernel@lists.infradead.org, linux-iio@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	William Breathitt Gray <vilhelm.gray@gmail.com>,
	Kamel Bouhara <kamel.bouhara@bootlin.com>
Subject: [PATCH v2] counter: microchip-tcb-capture: Fix CMR value check
Date: Sat, 14 Nov 2020 18:28:05 -0500	[thread overview]
Message-ID: <20201114232805.253108-1-vilhelm.gray@gmail.com> (raw)

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@bootlin.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
---
 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..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;
 }
-- 
2.29.2


WARNING: multiple messages have this Message-ID (diff)
From: William Breathitt Gray <vilhelm.gray@gmail.com>
To: jic23@kernel.org
Cc: Kamel Bouhara <kamel.bouhara@bootlin.com>,
	alexandre.belloni@bootlin.com, linux-iio@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	William Breathitt Gray <vilhelm.gray@gmail.com>,
	robh+dt@kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] counter: microchip-tcb-capture: Fix CMR value check
Date: Sat, 14 Nov 2020 18:28:05 -0500	[thread overview]
Message-ID: <20201114232805.253108-1-vilhelm.gray@gmail.com> (raw)

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@bootlin.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
---
 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..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;
 }
-- 
2.29.2


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             reply	other threads:[~2020-11-14 23:28 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-14 23:28 William Breathitt Gray [this message]
2020-11-14 23:28 ` [PATCH v2] counter: microchip-tcb-capture: Fix CMR value check William Breathitt Gray
2020-11-15 15:26 ` Kamel Bouhara
2020-11-15 15:26   ` Kamel Bouhara
2020-11-21 16:31   ` Jonathan Cameron
2020-11-21 16:31     ` Jonathan Cameron

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