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i2c-davinci: Remove useless IVR read

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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: Troy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Troy Kisky 2008-07-14 22:38:20 +02:00 committed by Jean Delvare
parent d868caa177
commit 0ab56e2067
1 changed files with 0 additions and 4 deletions
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4
drivers/i2c/busses/i2c-davinci.c
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@ -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;