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PM / x86: Save/restore MISC_ENABLE register

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Save/restore MISC_ENABLE register on suspend/resume.
This fixes OOPS (invalid opcode) on resume from STR on Asus P4P800-VM,
which wakes up with MWAIT disabled.

Fixes https://bugzilla.kernel.org/show_bug.cgi?id=15385

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Tested-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Ondrej Zary
2010-06-08 00:32:49 +02:00
committed by Rafael J. Wysocki
parent 386f40c86d
commit 85a0e75397
3 changed files with 8 additions and 0 deletions
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2
arch/x86/include/asm/suspend_32.h
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@@ -15,6 +15,8 @@ static inline int arch_prepare_suspend(void) { return 0; }
struct saved_context {
u16 es, fs, gs, ss;
unsigned long cr0, cr2, cr3, cr4;
u64 misc_enable;
bool misc_enable_saved;
struct desc_ptr gdt;
struct desc_ptr idt;
u16 ldt;