linux-kernel - [30/98] powernow-k8: Fix frequency reporting

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Message-Id: <20100510223537.117818001@kvm.kroah.org>
Date:	Mon, 10 May 2010 15:34:42 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Mark Langsdorf <mark.langsdorf@....com>,
	Borislav Petkov <borislav.petkov@....com>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>
Subject: [30/98] powernow-k8: Fix frequency reporting

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Mark Langsdorf <mark.langsdorf@....com>

commit b810e94c9d8e3fff6741b66cd5a6f099a7887871 upstream.

With F10, model 10, all valid frequencies are in the ACPI _PST table.

Signed-off-by: Mark Langsdorf <mark.langsdorf@....com>
LKML-Reference: <1270065406-1814-6-git-send-email-bp@...64.org>
Signed-off-by: Borislav Petkov <borislav.petkov@....com>
Reviewed-by: Thomas Renninger <trenn@...e.de>
Signed-off-by: H. Peter Anvin <hpa@...or.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 arch/x86/kernel/cpu/cpufreq/powernow-k8.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -929,7 +929,8 @@ static int fill_powernow_table_pstate(st
 		powernow_table[i].index = index;
 
 		/* Frequency may be rounded for these */
-		if (boot_cpu_data.x86 == 0x10 || boot_cpu_data.x86 == 0x11) {
+		if ((boot_cpu_data.x86 == 0x10 && boot_cpu_data.x86_model < 10)
+				 || boot_cpu_data.x86 == 0x11) {
 			powernow_table[i].frequency =
 				freq_from_fid_did(lo & 0x3f, (lo >> 6) & 7);
 		} else


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