i2c-davinci: Remove useless IVR read

Interrupts are enabled at the point where the DAVINCI_I2C_IVR_REG is read,
so unless an interrupt happened just at that moment, no interrupt would be
pending. Even though documentation implies you should do this, I see no
reason. If slave support is added, this read would cause a hard to
reproduce bug.
Signed-off-by: NTroy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: NKevin Hilman <khilman@mvista.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

drivers/i2c/busses/i2c-davinci.c

@@ -240,7 +240,6 @@ i2c_davinci_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg, int stop)
 	struct davinci_i2c_dev *dev = i2c_get_adapdata(adap);
 	struct davinci_i2c_platform_data *pdata = dev->dev->platform_data;
 	u32 flag;
-	u32 stat;
 	u16 w;
 	int r;
 
@@ -264,9 +263,6 @@ i2c_davinci_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg, int stop)
 	init_completion(&dev->cmd_complete);
 	dev->cmd_err = 0;
 
-	/* Clear any pending interrupts by reading the IVR */
-	stat = davinci_i2c_read_reg(dev, DAVINCI_I2C_IVR_REG);
-
 	/* Take I2C out of reset, configure it as master and set the
 	 * start bit */
 	flag = DAVINCI_I2C_MDR_IRS | DAVINCI_I2C_MDR_MST | DAVINCI_I2C_MDR_STT;