linux-kernel - [PATCH v2] staging: iio: Replace a bit shift by a use of BIT.

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Message-ID: <20170322164234.GA18805@arushi-HP-Pavilion-Notebook>
Date:   Wed, 22 Mar 2017 22:12:34 +0530
From:   Arushi Singhal <arushisinghal19971997@...il.com>
To:     lars@...afoo.de
Cc:     Michael Hennerich <Michael.Hennerich@...log.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-iio@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, outreachy-kernel@...glegroups.com
Subject: [PATCH v2] staging: iio: Replace a bit shift by a use of BIT.

This patch replaces bit shifting on 1 with the BIT(x) macro.
This was done with coccinelle:
@@
constant c;
@@

-1 << c
+BIT(c)

Signed-off-by: Arushi Singhal <arushisinghal19971997@...il.com>
---
changes in v2
 -remove/correct the wrong code.

 drivers/staging/iio/cdc/ad7150.c |  2 +-
 drivers/staging/iio/cdc/ad7746.c | 16 ++++++++--------
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/iio/cdc/ad7150.c b/drivers/staging/iio/cdc/ad7150.c
index ca72af3e9d4b..a6f249e9c1e1 100644
--- a/drivers/staging/iio/cdc/ad7150.c
+++ b/drivers/staging/iio/cdc/ad7150.c
@@ -232,7 +232,7 @@ static int ad7150_write_event_config(struct iio_dev *indio_dev,
 	if (ret < 0)
 		goto error_ret;
 
-	cfg = ret & ~((0x03 << 5) | (0x1 << 7));
+	cfg = ret & ~((0x03 << 5) | BIT(7));
 
 	switch (type) {
 	case IIO_EV_TYPE_MAG_ADAPTIVE:
diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/staging/iio/cdc/ad7746.c
index 81f8b9ee1120..453d3978879d 100644
--- a/drivers/staging/iio/cdc/ad7746.c
+++ b/drivers/staging/iio/cdc/ad7746.c
@@ -45,10 +45,10 @@
 #define AD7746_STATUS_RDYCAP		BIT(0)
 
 /* Capacitive Channel Setup Register Bit Designations (AD7746_REG_CAP_SETUP) */
-#define AD7746_CAPSETUP_CAPEN		(1 << 7)
-#define AD7746_CAPSETUP_CIN2		(1 << 6) /* AD7746 only */
-#define AD7746_CAPSETUP_CAPDIFF		(1 << 5)
-#define AD7746_CAPSETUP_CACHOP		(1 << 0)
+#define AD7746_CAPSETUP_CAPEN		(BIT(7))
+#define AD7746_CAPSETUP_CIN2		(BIT(6)) /* AD7746 only */
+#define AD7746_CAPSETUP_CAPDIFF		(BIT(5))
+#define AD7746_CAPSETUP_CACHOP		(BIT(0))
 
 /* Voltage/Temperature Setup Register Bit Designations (AD7746_REG_VT_SETUP) */
 #define AD7746_VTSETUP_VTEN		(1 << 7)
@@ -56,9 +56,9 @@
 #define AD7746_VTSETUP_VTMD_EXT_TEMP	(1 << 5)
 #define AD7746_VTSETUP_VTMD_VDD_MON	(2 << 5)
 #define AD7746_VTSETUP_VTMD_EXT_VIN	(3 << 5)
-#define AD7746_VTSETUP_EXTREF		(1 << 4)
-#define AD7746_VTSETUP_VTSHORT		(1 << 1)
-#define AD7746_VTSETUP_VTCHOP		(1 << 0)
+#define AD7746_VTSETUP_EXTREF		(BIT(4))
+#define AD7746_VTSETUP_VTSHORT		(BIT(1))
+#define AD7746_VTSETUP_VTCHOP		(BIT(0))
 
 /* Excitation Setup Register Bit Designations (AD7746_REG_EXC_SETUP) */
 #define AD7746_EXCSETUP_CLKCTRL		BIT(7)
@@ -82,7 +82,7 @@
 #define AD7746_CONF_MODE_GAIN_CAL	(6 << 0)
 
 /* CAPDAC Register Bit Designations (AD7746_REG_CAPDACx) */
-#define AD7746_CAPDAC_DACEN		(1 << 7)
+#define AD7746_CAPDAC_DACEN		(BIT(7))
 #define AD7746_CAPDAC_DACP(x)		((x) & 0x7F)
 
 /*
-- 
2.11.0