x86_64: acpi/wakeup_64 cleanup

- remove %ds re-set, it's already set in wakeup_long64
- remove double labels and alignment (ENTRY already adds both)
- use meaningful resume point labelname
- skip alignment while jumping from wakeup_long64 to the resume point
- remove .size, .type and unused labels
[v2]
- added ENDPROCs

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/arch/x86/kernel/acpi/wakeup_64.S b/arch/x86/kernel/acpi/wakeup_64.S
index bcc2934..b5dee6a 100644 (file)
--- a/arch/x86/kernel/acpi/wakeup_64.S
+++ b/arch/x86/kernel/acpi/wakeup_64.S
@@ -13,7 +13,6 @@
         * Hooray, we are in Long 64-bit mode (but still running in low memory)
         */
 ENTRY(wakeup_long64)
-wakeup_long64:
        movq    saved_magic, %rax
        movq    $0x123456789abcdef0, %rdx
        cmpq    %rdx, %rax
@@ -34,16 +33,12 @@ wakeup_long64:
 
        movq    saved_rip, %rax
        jmp     *%rax
+ENDPROC(wakeup_long64)
 
 bogus_64_magic:
        jmp     bogus_64_magic
 
-       .align 2
-       .p2align 4,,15
-.globl do_suspend_lowlevel
-       .type   do_suspend_lowlevel,@function
-do_suspend_lowlevel:
-.LFB5:
+ENTRY(do_suspend_lowlevel)
        subq    $8, %rsp
        xorl    %eax, %eax
        call    save_processor_state
@@ -67,7 +62,7 @@ do_suspend_lowlevel:
        pushfq
        popq    pt_regs_flags(%rax)
 
-       movq    $.L97, saved_rip(%rip)
+       movq    $resume_point, saved_rip(%rip)
 
        movq    %rsp, saved_rsp
        movq    %rbp, saved_rbp
@@ -79,13 +74,9 @@ do_suspend_lowlevel:
        movl    $3, %edi
        xorl    %eax, %eax
        jmp     acpi_enter_sleep_state
-.L97:
-       .p2align 4,,7
-.L99:
-       .align 4
-       movl    $24, %eax
-       movw    %ax, %ds
 
+       .align 4
+resume_point:
        /* We don't restore %rax, it must be 0 anyway */
        movq    $saved_context, %rax
        movq    saved_context_cr4(%rax), %rbx
@@ -117,12 +108,9 @@ do_suspend_lowlevel:
        xorl    %eax, %eax
        addq    $8, %rsp
        jmp     restore_processor_state
-.LFE5:
-.Lfe5:
-       .size   do_suspend_lowlevel, .Lfe5-do_suspend_lowlevel
-       
+ENDPROC(do_suspend_lowlevel)
+
 .data
-ALIGN
 ENTRY(saved_rbp)       .quad   0
 ENTRY(saved_rsi)       .quad   0
 ENTRY(saved_rdi)       .quad   0