On 18/09/15 13:06, EXT Andy Shevchenko wrote:
> There is a warning when compiling i2c-core.c
> drivers/i2c/i2c-core.c:2561:36: warning: dubious: x | !y
>
> Fix it by using a plain bitwise AND since I2C_M_RD is a bit 0 and thus we are
> on the safe side.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Reviewed-by: Alexander Sverdlin <aleaxander.sverdlin@xxxxxxxxx>
> ---
> drivers/i2c/i2c-core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
> index 5f89f1e..a732107 100644
> --- a/drivers/i2c/i2c-core.c
> +++ b/drivers/i2c/i2c-core.c
> @@ -2555,7 +2555,7 @@ static u8 i2c_smbus_pec(u8 crc, u8 *p, size_t count)
> static u8 i2c_smbus_msg_pec(u8 pec, struct i2c_msg *msg)
> {
> /* The address will be sent first */
> - u8 addr = (msg->addr << 1) | !!(msg->flags & I2C_M_RD);
> + u8 addr = (msg->addr << 1) | (msg->flags & I2C_M_RD);
> pec = i2c_smbus_pec(pec, &addr, 1);
>
> /* The data buffer follows */
--
Best regards,
Alexander Sverdlin.
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