linux-kernel - [PATCH] staging: iio: accel: adis16240: Improve readability on write

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Message-Id: <20190810150058.3509-1-rodrigorsdc@gmail.com>
Date:   Sat, 10 Aug 2019 12:00:58 -0300
From:   Rodrigo <rodrigorsdc@...il.com>
To:     Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Stefan Popa <stefan.popa@...log.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-iio@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, kernel-usp@...glegroups.com,
        Rodrigo Carvalho <rodrigorsdc@...il.com>
Subject: [PATCH] staging: iio: accel: adis16240: Improve readability on write_raw function

From: Rodrigo Carvalho <rodrigorsdc@...il.com>

Improve readability by using GENMASK macro, changing switch statement
by if statement and removing unnecessary local variables.

Signed-off-by: Rodrigo Ribeiro Carvalho <rodrigorsdc@...il.com>
---
 drivers/staging/iio/accel/adis16240.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/iio/accel/adis16240.c b/drivers/staging/iio/accel/adis16240.c
index 62f4b3b1b457..68f165501389 100644
--- a/drivers/staging/iio/accel/adis16240.c
+++ b/drivers/staging/iio/accel/adis16240.c
@@ -309,17 +309,15 @@ static int adis16240_write_raw(struct iio_dev *indio_dev,
 			       long mask)
 {
 	struct adis *st = iio_priv(indio_dev);
-	int bits = 10;
-	s16 val16;
+	int m;
 	u8 addr;
 
-	switch (mask) {
-	case IIO_CHAN_INFO_CALIBBIAS:
-		val16 = val & ((1 << bits) - 1);
-		addr = adis16240_addresses[chan->scan_index][0];
-		return adis_write_reg_16(st, addr, val16);
-	}
-	return -EINVAL;
+	if (mask != IIO_CHAN_INFO_CALIBBIAS)
+		return -EINVAL;
+
+	m = GENMASK(9, 0);
+	addr = adis16240_addresses[chan->scan_index][0];
+	return adis_write_reg_16(st, addr, val & m);
 }
 
 static const struct iio_chan_spec adis16240_channels[] = {
-- 
2.20.1