[3.11.y.z extended stable] Patch "hwmon: (emc1403) Support full range of known chip revision numbers" has been added to staging queue

Luis Henriques luis.henriques at canonical.com
Fri May 30 09:28:50 UTC 2014

This is a note to let you know that I have just added a patch titled

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

to the linux-3.11.y-queue branch of the 3.11.y.z extended stable tree 
which can be found at:


If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.11.y.z tree, see



>From 6bfaf769b1cccc77cae0c91969ea7b2614b93828 Mon Sep 17 00:00:00 2001
From: Josef Gajdusek <atx at atx.name>
Date: Mon, 12 May 2014 13:48:26 +0200
Subject: hwmon: (emc1403) Support full range of known chip revision numbers

commit 3a18e1398fc2dc9c32bbdc50664da3a77959a8d1 upstream.

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 at atx.name>
[Guenter Roeck: Updated headline and description]
Signed-off-by: Guenter Roeck <linux at roeck-us.net>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
 drivers/hwmon/emc1403.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c
index 62fba71ef3c5..361f50b221bd 100644
--- a/drivers/hwmon/emc1403.c
+++ b/drivers/hwmon/emc1403.c
@@ -295,7 +295,7 @@ 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;

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