ARM: mach-shmobile: optimize get_irqnr_preamble/and_base macros

Optimize the SH-Mobile interrupt assembly macros to avoid
reloading the INTFLGA register address in case of multiple
pending interrupts. Kindly pointed out by Russell King.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/arch/arm/mach-shmobile/include/mach/entry-macro.S b/arch/arm/mach-shmobile/include/mach/entry-macro.S
index 796b304..a285d13 100644 (file)
--- a/arch/arm/mach-shmobile/include/mach/entry-macro.S
+++ b/arch/arm/mach-shmobile/include/mach/entry-macro.S
@@ -21,13 +21,13 @@
        .endm
 
        .macro  get_irqnr_preamble, base, tmp
+       ldr     \base, =INTFLGA
        .endm
 
        .macro  arch_ret_to_user, tmp1, tmp2
        .endm
 
        .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
-       ldr     \base, =INTFLGA
        ldr     \irqnr, [\base]
        cmp     \irqnr, #0
        beq     1000f