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authorTroy Kisky <troy.kisky@boundarydevices.com>2008-07-14 22:38:20 +0200
committerJean Delvare <khali@mahadeva.delvare>2008-07-14 22:38:20 +0200
commit0ab56e20674b41dd0203d16b602aac8d9d26a70a (patch)
tree8351896de0b48bd4ea68df1405797bc00e01a2d5 /drivers
parentd868caa177d4487ce1935926498f542a8f67c1cf (diff)
downloadop-kernel-dev-0ab56e20674b41dd0203d16b602aac8d9d26a70a.zip
op-kernel-dev-0ab56e20674b41dd0203d16b602aac8d9d26a70a.tar.gz
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/i2c/busses/i2c-davinci.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
index 85097fd..c56f8fe 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;
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