From: Zhao Yakui <yakui.zhao@intel.com>
Date: Sun, 27 Sep 2009 07:30:51 +0000 (-0400)
Subject: ACPI: fix Compaq Evo N800c (Pentium 4m) boot hang regression
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3e2ada5867b7e9fa0b296d30fa8f3726ebd0a8b7;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

ACPI: fix Compaq Evo N800c (Pentium 4m) boot hang regression

Don't disable ARB_DISABLE when the familary ID is 0x0F.

http://bugzilla.kernel.org/show_bug.cgi?id=14211

This was a 2.6.31 regression, and so this patch
needs to be applied to 2.6.31.stable

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---

diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c
index 8c44c232efcb..59cdfa4686b2 100644
--- a/arch/x86/kernel/acpi/cstate.c
+++ b/arch/x86/kernel/acpi/cstate.c
@@ -48,7 +48,7 @@ void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
 	 * P4, Core and beyond CPUs
 	 */
 	if (c->x86_vendor == X86_VENDOR_INTEL &&
-	    (c->x86 > 0x6 || (c->x86 == 6 && c->x86_model >= 14)))
+	    (c->x86 > 0xf || (c->x86 == 6 && c->x86_model >= 14)))
 			flags->bm_control = 0;
 }
 EXPORT_SYMBOL(acpi_processor_power_init_bm_check);