From: Jiri Slaby Date: Sun, 15 Feb 2009 21:46:45 +0000 (+0100) Subject: x86_64: Fix S3 fail path X-Git-Tag: v2.6.29-rc6~9^2^4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6defa2fe2019f3729933516fba5cfd75eecd07de;p=platform%2Fupstream%2Fkernel-adaptation-pc.git x86_64: Fix S3 fail path As acpi_enter_sleep_state can fail, take this into account in do_suspend_lowlevel and don't return to the do_suspend_lowlevel's caller. This would break (currently) fpu status and preempt count. Technically, this means use `call' instead of `jmp' and `jmp' to the `resume_point' after the `call' (i.e. if acpi_enter_sleep_state returns=fails). `resume_point' will handle the restore of fpu and preempt count gracefully. Signed-off-by: Jiri Slaby Signed-off-by: Rafael J. Wysocki Signed-off-by: Len Brown --- diff --git a/arch/x86/kernel/acpi/wakeup_64.S b/arch/x86/kernel/acpi/wakeup_64.S index b5dee6a..96258d9 100644 --- a/arch/x86/kernel/acpi/wakeup_64.S +++ b/arch/x86/kernel/acpi/wakeup_64.S @@ -73,7 +73,9 @@ ENTRY(do_suspend_lowlevel) addq $8, %rsp movl $3, %edi xorl %eax, %eax - jmp acpi_enter_sleep_state + call acpi_enter_sleep_state + /* in case something went wrong, restore the machine status and go on */ + jmp resume_point .align 4 resume_point: