i2c-i801: Properly report bus arbitration loss
Bit BUS_ERR of the status register means that the ICH host controller
lost the arbitration. Report this event as such.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 965905f..614c9e4 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -179,10 +179,8 @@
}
if (temp & SMBHSTSTS_BUS_ERR) {
- result = -EIO;
- dev_err(&I801_dev->dev, "Bus collision! SMBus may be locked "
- "until next hard reset. (sorry!)\n");
- /* Clock stops and slave is stuck in mid-transmission */
+ result = -EAGAIN;
+ dev_dbg(&I801_dev->dev, "Lost arbitration\n");
}
if (temp & SMBHSTSTS_DEV_ERR) {
@@ -339,8 +337,8 @@
dev_dbg(&I801_dev->dev,
"Error: Failed bus transaction\n");
} else if (temp & SMBHSTSTS_BUS_ERR) {
- result = -EIO;
- dev_err(&I801_dev->dev, "Bus collision!\n");
+ result = -EAGAIN;
+ dev_dbg(&I801_dev->dev, "Lost arbitration\n");
} else if (temp & SMBHSTSTS_DEV_ERR) {
result = -ENXIO;
dev_dbg(&I801_dev->dev, "Error: no response!\n");