linux-kernel - [PATCH v2] staging: rts5208: Replace a bit shift by a use of BIT.

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Message-ID: <20170322131757.GA5335@arushi-HP-Pavilion-Notebook>
Date:   Wed, 22 Mar 2017 18:47:57 +0530
From:   Arushi Singhal <arushisinghal19971997@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        outreachy-kernel@...glegroups.com
Subject: [PATCH v2] staging: rts5208: 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 the unnecessary parenthesis.

 drivers/staging/rts5208/rtsx_chip.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/rts5208/rtsx_chip.c b/drivers/staging/rts5208/rtsx_chip.c
index 3511157a2c78..7f4107bffe31 100644
--- a/drivers/staging/rts5208/rtsx_chip.c
+++ b/drivers/staging/rts5208/rtsx_chip.c
@@ -1490,7 +1490,7 @@ int rtsx_write_register(struct rtsx_chip *chip, u16 addr, u8 mask, u8 data)
 
 	for (i = 0; i < MAX_RW_REG_CNT; i++) {
 		val = rtsx_readl(chip, RTSX_HAIMR);
-		if ((val & (1 << 31)) == 0) {
+		if ((val & BIT(31)) == 0) {
 			if (data != (u8)val) {
 				rtsx_trace(chip);
 				return STATUS_FAIL;
@@ -1518,7 +1518,7 @@ int rtsx_read_register(struct rtsx_chip *chip, u16 addr, u8 *data)
 
 	for (i = 0; i < MAX_RW_REG_CNT; i++) {
 		val = rtsx_readl(chip, RTSX_HAIMR);
-		if ((val & (1 << 31)) == 0)
+		if ((val & BIT(31)) == 0)
 			break;
 	}
 
-- 
2.11.0