linux-kernel - [PATCH v4 13/13] iio: adc: axp20x_adc: remove !! in favor of ternary condition

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Date:   Mon, 19 Feb 2018 13:47:36 +0100
From:   Quentin Schulz <quentin.schulz@...tlin.com>
To:     sre@...nel.org, robh+dt@...nel.org, mark.rutland@....com,
        wens@...e.org, linux@...linux.org.uk, maxime.ripard@...tlin.com,
        jic23@...nel.org
Cc:     knaack.h@....de, lars@...afoo.de, pmeerw@...erw.net,
        lee.jones@...aro.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-iio@...r.kernel.org,
        thomas.petazzoni@...tlin.com, linux-sunxi@...glegroups.com,
        Quentin Schulz <quentin.schulz@...tlin.com>
Subject: [PATCH v4 13/13] iio: adc: axp20x_adc: remove !! in favor of ternary condition

!!'s behaviour isn't that obvious and sparse complained about it, so
let's replace it with a ternary condition.

Signed-off-by: Quentin Schulz <quentin.schulz@...tlin.com>
---
 drivers/iio/adc/axp20x_adc.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c
index a30a972..7a745cf 100644
--- a/drivers/iio/adc/axp20x_adc.c
+++ b/drivers/iio/adc/axp20x_adc.c
@@ -365,7 +365,7 @@ static int axp20x_adc_offset_voltage(struct iio_dev *indio_dev, int channel,
 		return -EINVAL;
 	}
 
-	*val = !!(*val) * 700000;
+	*val = *val ? 700000 : 0;
 
 	return IIO_VAL_INT;
 }
@@ -442,15 +442,17 @@ static int axp20x_write_raw(struct iio_dev *indio_dev,
 	if (val != 0 && val != 700000)
 		return -EINVAL;
 
+	val = val ? 1 : 0;
+
 	switch (chan->channel) {
 	case AXP20X_GPIO0_V:
 		reg = AXP20X_GPIO10_IN_RANGE_GPIO0;
-		regval = AXP20X_GPIO10_IN_RANGE_GPIO0_VAL(!!val);
+		regval = AXP20X_GPIO10_IN_RANGE_GPIO0_VAL(val);
 		break;
 
 	case AXP20X_GPIO1_V:
 		reg = AXP20X_GPIO10_IN_RANGE_GPIO1;
-		regval = AXP20X_GPIO10_IN_RANGE_GPIO1_VAL(!!val);
+		regval = AXP20X_GPIO10_IN_RANGE_GPIO1_VAL(val);
 		break;
 
 	default:
-- 
git-series 0.9.1