[PATCH] Enable coretemp driver on Intel Atom

From: Michael Riepe <michael.riepe@googlemail.com>
To: linux-kernel@vger.kernel.org
Subject: [PATCH] Enable coretemp driver on Intel Atom
Date: Fri, 17 Apr 2009 01:46:18 +0200	[thread overview]
Message-ID: <49E7C34A.60007@googlemail.com> (raw)

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Hi!

This small patch enables the coretemp driver on an Intel Atom. I'm not
sure if the readings are correct, however - on my 330, the driver
reports values between 27 and 41 °C (with core1 being about 8°C hotter
than core0, given the same load). Maybe the maximum temperature of 100
°C is wrong for Atom CPUs.

-- 
Michael "Tired" Riepe <michael.riepe@googlemail.com>
X-Tired: Each morning I get up I die a little

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Signed-off-by: Michael Riepe <michael.riepe@googlemail.com>

Index: drivers/hwmon/coretemp.c
===================================================================
RCS file: /var/cvs/sys/kernel/linux-2.6/drivers/hwmon/coretemp.c,v
retrieving revision 1.1.1.5
diff -u -r1.1.1.5 coretemp.c

--- drivers/hwmon/coretemp.c	11 Jan 2009 21:29:23 -0000	1.1.1.5
+++ drivers/hwmon/coretemp.c	16 Apr 2009 23:02:40 -0000
@@ -185,7 +185,7 @@
 		}
 	}
 
-	if (ismobile) {
+	if (ismobile || c->x86_model == 0x1c) {
 
 		err = rdmsr_safe_on_cpu(id, 0xee, &eax, &edx);
 		if (err) {
@@ -417,7 +417,7 @@
 		if ((c->cpuid_level < 0) || (c->x86 != 0x6) ||
 		    !((c->x86_model == 0xe) || (c->x86_model == 0xf) ||
 			(c->x86_model == 0x16) || (c->x86_model == 0x17) ||
-			(c->x86_model == 0x1A))) {
+			(c->x86_model == 0x1A) || (c->x86_model == 0x1c))) {
 
 			/* supported CPU not found, but report the unknown
 			   family 6 CPU */
