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[1/2] i2c: smbus: don't abuse loop variable

Message ID 20210112151230.46518-2-wsa+renesas@sang-engineering.com
State Accepted
Headers show
Series i2c: smbus: small cleanups in emulation function | expand

Commit Message

Wolfram Sang Jan. 12, 2021, 3:12 p.m. UTC 
Don't use 'i' to carry data, make a specific variable for it. After the
move to memcpy recently, we can even remove 'i'.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
 drivers/i2c/i2c-core-smbus.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

Comments

Wolfram Sang Jan. 28, 2021, 9:15 a.m. UTC | #1 
On Tue, Jan 12, 2021 at 04:12:29PM +0100, Wolfram Sang wrote:
> Don't use 'i' to carry data, make a specific variable for it. After the
> move to memcpy recently, we can even remove 'i'.
> 
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

Applied to for-next, thanks!
diff mbox series

Patch

diff --git a/drivers/i2c/i2c-core-smbus.c b/drivers/i2c/i2c-core-smbus.c
index bf6bfe7c5cfe..6cda46913d89 100644
--- a/drivers/i2c/i2c-core-smbus.c
+++ b/drivers/i2c/i2c-core-smbus.c
@@ -324,7 +324,6 @@  static s32 i2c_smbus_xfer_emulated(struct i2c_adapter *adapter, u16 addr,
 	unsigned char msgbuf0[I2C_SMBUS_BLOCK_MAX+3];
 	unsigned char msgbuf1[I2C_SMBUS_BLOCK_MAX+2];
 	int num = read_write == I2C_SMBUS_READ ? 2 : 1;
-	int i;
 	u8 partial_pec = 0;
 	int status;
 	struct i2c_msg msg[2] = {
@@ -340,6 +339,8 @@  static s32 i2c_smbus_xfer_emulated(struct i2c_adapter *adapter, u16 addr,
 			.buf = msgbuf1,
 		},
 	};
+	bool wants_pec = ((flags & I2C_CLIENT_PEC) && size != I2C_SMBUS_QUICK
+			  && size != I2C_SMBUS_I2C_BLOCK_DATA);
 
 	msgbuf0[0] = command;
 	switch (size) {
@@ -443,9 +444,7 @@  static s32 i2c_smbus_xfer_emulated(struct i2c_adapter *adapter, u16 addr,
 		return -EOPNOTSUPP;
 	}
 
-	i = ((flags & I2C_CLIENT_PEC) && size != I2C_SMBUS_QUICK
-				      && size != I2C_SMBUS_I2C_BLOCK_DATA);
-	if (i) {
+	if (wants_pec) {
 		/* Compute PEC if first message is a write */
 		if (!(msg[0].flags & I2C_M_RD)) {
 			if (num == 1) /* Write only */
@@ -468,7 +467,7 @@  static s32 i2c_smbus_xfer_emulated(struct i2c_adapter *adapter, u16 addr,
 	status = 0;
 
 	/* Check PEC if last message is a read */
-	if (i && (msg[num-1].flags & I2C_M_RD)) {
+	if (wants_pec && (msg[num-1].flags & I2C_M_RD)) {
 		status = i2c_smbus_check_pec(partial_pec, &msg[num-1]);
 		if (status < 0)
 			goto cleanup;