hwmon: (emc1403) Support full range of known chip revision numbers

The datasheet for EMC1413/EMC1414, which is fully compatible to
EMC1403/1404 and uses the same chip identification, references revision
numbers 0x01, 0x03, and 0x04. Accept the full range of revision numbers
from 0x01 to 0x04 to make sure none are missed.

Signed-off-by: Josef Gajdusek <atx@atx.name>
Cc: stable@vger.kernel.org
[Guenter Roeck: Updated headline and description]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c
index 42a3cfcd15c1e7df6d17d0377514815c7f5ece0b..01723f04fe45bfa449b60d07a05cd905cc9ccc98 100644 (file)
--- a/drivers/hwmon/emc1403.c
+++ b/drivers/hwmon/emc1403.c
@@ -330,7 +330,7 @@ static int emc1403_detect(struct i2c_client *client,
        }
 
        id = i2c_smbus_read_byte_data(client, THERMAL_REVISION_REG);
-       if (id != 0x01)
+       if (id < 0x01 || id > 0x04)
                return -ENODEV;
 
        return 0;