Make sure that in case access to non-exisiting I2C address is done HW
is reset afterwards and works properly for next access.
Signed-off-by: Dirk Behme <[EMAIL PROTECTED]>
Index: linux-davinci/drivers/i2c/busses/i2c-davinci.c
===================================================================
--- linux-davinci.orig/drivers/i2c/busses/i2c-davinci.c
+++ linux-davinci/drivers/i2c/busses/i2c-davinci.c
@@ -348,6 +348,12 @@ i2c_davinci_xfer_msg(struct i2c_adapter
w = davinci_i2c_read_reg(dev, DAVINCI_I2C_MDR_REG);
MOD_REG_BIT(w, DAVINCI_I2C_MDR_STP, 1);
davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, w);
+#ifdef DAVINCI_HACK
+ /* Reset error for next access working properly again */
+ w = davinci_i2c_read_reg(dev, DAVINCI_I2C_MDR_REG);
+ MOD_REG_BIT(w, DAVINCI_I2C_MDR_IRS, 0);
+ davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, w);
+#endif
}
return -EREMOTEIO;
}
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