[PATCH] hwmon: New device ID for the smsc47b397 driver

This patch adds a new ID to the SMSC LPC47B397-NC hardware
monitoring driver - for a chip that is claimed to be 100%
compatible otherwise.

Signed-off-by: Bryan Young (Utilitek Systems, Inc.)
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 10 insertions, 5 deletions

diff --git a/Documentation/hwmon/smsc47b397 b/Documentation/hwmon/smsc47b397
index da9d80c96432..20682f15ae41 100644
--- a/Documentation/hwmon/smsc47b397
+++ b/Documentation/hwmon/smsc47b397
@@ -3,6 +3,7 @@ Kernel driver smsc47b397
 
 Supported chips:
   * SMSC LPC47B397-NC
+  * SMSC SCH5307-NS
     Prefix: 'smsc47b397'
     Addresses scanned: none, address read from Super I/O config space
     Datasheet: In this file
@@ -12,11 +13,14 @@ Authors: Mark M. Hoffman <mhoffman@lightlink.com>
 
 November 23, 2004
 
-The following specification describes the SMSC LPC47B397-NC sensor chip
+The following specification describes the SMSC LPC47B397-NC[1] sensor chip
 (for which there is no public datasheet available). This document was
 provided by Craig Kelly (In-Store Broadcast Network) and edited/corrected
 by Mark M. Hoffman <mhoffman@lightlink.com>.
 
+[1] And SMSC SCH5307-NS, which has a different device ID but is otherwise
+compatible.
+
 * * * * *
 
 Methods for detecting the HP SIO and reading the thermal data on a dc7100.
@@ -127,7 +131,7 @@ OUT	DX,AL
 The registers of interest for identifying the SIO on the dc7100 are Device ID
 (0x20) and Device Rev  (0x21).
 
-The Device ID will read 0X6F
+The Device ID will read 0x6F (for SCH5307-NS, 0x81)
 The Device Rev currently reads 0x01
 
 Obtaining the HWM Base Address.
diff --git a/drivers/hwmon/smsc47b397.c b/drivers/hwmon/smsc47b397.c
index 7fe71576dea4..37ed8b33f01a 100644
--- a/drivers/hwmon/smsc47b397.c
+++ b/drivers/hwmon/smsc47b397.c
@@ -299,7 +299,7 @@ static int __init smsc47b397_find(unsigned short *addr)
         superio_enter();
         id = superio_inb(SUPERIO_REG_DEVID);
 
-        if (id != 0x6f) {
+        if ((id != 0x6f) && (id != 0x81)) {
                 superio_exit();
                 return -ENODEV;
         }
@@ -310,8 +310,9 @@ static int __init smsc47b397_find(unsigned short *addr)
         *addr = (superio_inb(SUPERIO_REG_BASE_MSB) << 8)
                  |  superio_inb(SUPERIO_REG_BASE_LSB);
 
-        printk(KERN_INFO "smsc47b397: found SMSC LPC47B397-NC "
-                "(base address 0x%04x, revision %u)\n", *addr, rev);
+        printk(KERN_INFO "smsc47b397: found SMSC %s "
+                "(base address 0x%04x, revision %u)\n",
+                id == 0x81 ? "SCH5307-NS" : "LPC47B397-NC", *addr, rev);
 
         superio_exit();
         return 0;