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>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/i2c/busses/i2c-ali15x3.c b/drivers/i2c/busses/i2c-ali15x3.c
index 3d752561dc37..7b029b147a8e 100644
--- a/drivers/i2c/busses/i2c-ali15x3.c
+++ b/drivers/i2c/busses/i2c-ali15x3.c
@@ -362,9 +362,6 @@ static s32 ali15x3_access(struct i2c_adapter * adap, u16 addr,
         }
 
         switch (size) {
-        case I2C_SMBUS_PROC_CALL:
-                dev_err(&adap->dev, "I2C_SMBUS_PROC_CALL not supported!\n");
-                return -EOPNOTSUPP;
         case I2C_SMBUS_QUICK:
                 outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
                        SMBHSTADD);
@@ -417,6 +414,9 @@ static s32 ali15x3_access(struct i2c_adapter * adap, u16 addr,
                 }
                 size = ALI15X3_BLOCK_DATA;
                 break;
+        default:
+                dev_warn(&adap->dev, "Unsupported transaction %d\n", size);
+                return -EOPNOTSUPP;
         }
 
         outb_p(size, SMBHSTCNT);        /* output command */