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| author | Jean Delvare <khali@linux-fr.org> | 2008-07-14 22:38:32 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@mahadeva.delvare> | 2008-07-14 22:38:32 +0200 |
| commit | dcb5c9239de8d3ff1c663e75f0f1c75bcb21ee20 (patch) | |
| tree | d4fd4a3cabf3256edbb14a98834d350299299de6 /drivers/i2c | |
| parent | 90df2cb1c8822ef8d06a2b30627e7a810218b0dd (diff) | |
| download | kernel_samsung_smdk4412-dcb5c9239de8d3ff1c663e75f0f1c75bcb21ee20.zip kernel_samsung_smdk4412-dcb5c9239de8d3ff1c663e75f0f1c75bcb21ee20.tar.gz kernel_samsung_smdk4412-dcb5c9239de8d3ff1c663e75f0f1c75bcb21ee20.tar.bz2 | |
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>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 10 |
1 files changed, 4 insertions, 6 deletions
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 @@ static int i801_transaction(int xact) } 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 @@ static int i801_block_transaction_byte_by_byte(union i2c_smbus_data *data, 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"); |