From: ykzhao <yakui.zhao@intel.com>
To: lenb@kernel.org
Cc: linux-acpi@vger.kernel.org
Subject: [PATCH] ACPI : ACPI: Don't disable ARB_DISABLE on some old cpus
Date: Sun, 27 Sep 2009 13:15:02 +0800 [thread overview]
Message-ID: <1254028502.4298.11.camel@localhost.localdomain> (raw)
From: Zhao Yakui <yakui.zhao@intel.com>
Don't disable ARB_DISABLE when the familary ID is 0x0F.
It is required when it enters the C3 state on the old cpus.
http://bugzilla.kernel.org/show_bug.cgi?id=14211
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
---
arch/x86/kernel/acpi/cstate.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6/arch/x86/kernel/acpi/cstate.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/acpi/cstate.c 2009-09-18 10:28:32.000000000 +0800
+++ linux-2.6/arch/x86/kernel/acpi/cstate.c 2009-09-24 14:59:57.000000000 +0800
@@ -48,7 +48,7 @@
* 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);
next reply other threads:[~2009-09-27 5:15 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-27 5:15 ykzhao [this message]
2009-09-27 7:51 ` [PATCH] ACPI : ACPI: Don't disable ARB_DISABLE on some old cpu Len Brown
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