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authorJean Delvare <khali@linux-fr.org>2008-07-14 22:38:25 +0200
committerJean Delvare <khali@mahadeva.delvare>2008-07-14 22:38:25 +0200
commitac7fc4fb2b6a126af8d07f46500440c9641976cf (patch)
tree1ba7a6b229699f6d69cfe3f1bd74c020e952e16b /drivers/i2c/busses/i2c-sis630.c
parentfa63cd56d2f09806169307d761e8f430e23bc09b (diff)
downloadop-kernel-dev-ac7fc4fb2b6a126af8d07f46500440c9641976cf.zip
op-kernel-dev-ac7fc4fb2b6a126af8d07f46500440c9641976cf.tar.gz
i2c: Consistently reject unsupported transactions
Many PC SMBus host controller drivers don't properly handle the case where they are requested to achieve a transaction they do not support. Update them so that the consistently print a warning message and return a single error value in this case. Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/i2c/busses/i2c-sis630.c')
-rw-r--r--drivers/i2c/busses/i2c-sis630.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c
index c4cc5ed..d7e6ff3 100644
--- a/drivers/i2c/busses/i2c-sis630.c
+++ b/drivers/i2c/busses/i2c-sis630.c
@@ -356,7 +356,8 @@ static s32 sis630_access(struct i2c_adapter *adap, u16 addr,
size = SIS630_BLOCK_DATA;
return sis630_block_data(adap, data, read_write);
default:
- printk("Unsupported SMBus operation\n");
+ dev_warn(&adap->dev, "Unsupported transaction %d\n",
+ size);
return -EOPNOTSUPP;
}
@@ -378,8 +379,6 @@ static s32 sis630_access(struct i2c_adapter *adap, u16 addr,
case SIS630_WORD_DATA:
data->word = sis630_read(SMB_BYTE) + (sis630_read(SMB_BYTE + 1) << 8);
break;
- default:
- return -EOPNOTSUPP;
}
return 0;
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