i2c: Bus drivers don't have to support I2C_M_REV_DIR_ADDR

I2C bus drivers don't have to support I2C_M_REV_DIR_ADDR. It is a
deviation from the I2C specification, which only makes sense to
implement when really needed.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Ben Dooks <ben-linux@fluff.org>

diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c
index a75c75e77b926417f94524274c256d02fcf7b16b..5901707fc66accbef77b71be68df99da24b1183d 100644 (file)
--- a/drivers/i2c/busses/i2c-iop3xx.c
+++ b/drivers/i2c/busses/i2c-iop3xx.c
@@ -56,12 +56,6 @@ iic_cook_addr(struct i2c_msg *msg)
        if (msg->flags & I2C_M_RD)
                addr |= 1;
 
-       /*
-        * Read or Write?
-        */
-       if (msg->flags & I2C_M_REV_DIR_ADDR)
-               addr ^= 1;
-
        return addr;   
 }
 

diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index bbab0e16663037955f162f467c3f43a48e3c175f..ed387ffa47307b1a28b90f9646e4d8dd3b6262c9 100644 (file)
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -338,9 +338,6 @@ mv64xxx_i2c_prepare_for_io(struct mv64xxx_i2c_data *drv_data,
        if (msg->flags & I2C_M_RD)
                dir = 1;
 
-       if (msg->flags & I2C_M_REV_DIR_ADDR)
-               dir ^= 1;
-
        if (msg->flags & I2C_M_TEN) {
                drv_data->addr1 = 0xf0 | (((u32)msg->addr & 0x300) >> 7) | dir;
                drv_data->addr2 = (u32)msg->addr & 0xff;

diff --git a/drivers/i2c/busses/i2c-powermac.c b/drivers/i2c/busses/i2c-powermac.c
index 02b02413850a437c6a5fdb27d8189370d619501c..1c440a70ec6139c8c6bfe5b1fd9195608dd9de71 100644 (file)
--- a/drivers/i2c/busses/i2c-powermac.c
+++ b/drivers/i2c/busses/i2c-powermac.c
@@ -162,8 +162,6 @@ static int i2c_powermac_master_xfer(        struct i2c_adapter *adap,
                return -EINVAL;
        read = (msgs->flags & I2C_M_RD) != 0;
        addrdir = (msgs->addr << 1) | read;
-       if (msgs->flags & I2C_M_REV_DIR_ADDR)
-               addrdir ^= 1;
 
        rc = pmac_i2c_open(bus, 0);
        if (rc) {