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| author | Troy Kisky <troy.kisky@boundarydevices.com> | 2008-07-14 22:38:20 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@mahadeva.delvare> | 2008-07-14 22:38:20 +0200 |
| commit | 0ab56e20674b41dd0203d16b602aac8d9d26a70a (patch) | |
| tree | 8351896de0b48bd4ea68df1405797bc00e01a2d5 | |
| parent | d868caa177d4487ce1935926498f542a8f67c1cf (diff) | |
| download | linux-0ab56e20674b41dd0203d16b602aac8d9d26a70a.tar.gz linux-0ab56e20674b41dd0203d16b602aac8d9d26a70a.tar.bz2 linux-0ab56e20674b41dd0203d16b602aac8d9d26a70a.zip | |
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: Troy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
| -rw-r--r-- | drivers/i2c/busses/i2c-davinci.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c index 85097fdc75e4..c56f8fe4efe5 100644 --- a/drivers/i2c/busses/i2c-davinci.c +++ b/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; |