i2c-davinci: Fix lost interrupt
DAVINCI_I2C_STR_REG is a write 1 to clear register,
so don't use a read/modify/write cycle.
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@gmail.com>
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
index cce5a61..fde2634 100644
--- a/drivers/i2c/busses/i2c-davinci.c
+++ b/drivers/i2c/busses/i2c-davinci.c
@@ -382,9 +382,8 @@
break;
case DAVINCI_I2C_IVR_ARDY:
- w = davinci_i2c_read_reg(dev, DAVINCI_I2C_STR_REG);
- MOD_REG_BIT(w, DAVINCI_I2C_STR_ARDY, 1);
- davinci_i2c_write_reg(dev, DAVINCI_I2C_STR_REG, w);
+ davinci_i2c_write_reg(dev,
+ DAVINCI_I2C_STR_REG, DAVINCI_I2C_STR_ARDY);
complete(&dev->cmd_complete);
break;
@@ -397,12 +396,9 @@
if (dev->buf_len)
continue;
- w = davinci_i2c_read_reg(dev,
- DAVINCI_I2C_STR_REG);
- MOD_REG_BIT(w, DAVINCI_I2C_IMR_RRDY, 0);
davinci_i2c_write_reg(dev,
- DAVINCI_I2C_STR_REG,
- w);
+ DAVINCI_I2C_STR_REG,
+ DAVINCI_I2C_IMR_RRDY);
} else
dev_err(dev->dev, "RDR IRQ while no "
"data requested\n");
@@ -428,9 +424,8 @@
break;
case DAVINCI_I2C_IVR_SCD:
- w = davinci_i2c_read_reg(dev, DAVINCI_I2C_STR_REG);
- MOD_REG_BIT(w, DAVINCI_I2C_STR_SCD, 1);
- davinci_i2c_write_reg(dev, DAVINCI_I2C_STR_REG, w);
+ davinci_i2c_write_reg(dev,
+ DAVINCI_I2C_STR_REG, DAVINCI_I2C_STR_SCD);
complete(&dev->cmd_complete);
break;