MIPS: Alchemy: reduce size of irq dispatcher

By replacing an extra do_IRQ with a goto, the assembly shrinks
from 260 to 212 bytes (gcc-4.3.4).

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 5 insertions, 3 deletions

diff --git a/arch/mips/alchemy/common/irq.c b/arch/mips/alchemy/common/irq.c
index f5b148af8b8c..960a3ee2bd4c 100644
--- a/arch/mips/alchemy/common/irq.c
+++ b/arch/mips/alchemy/common/irq.c
@@ -519,8 +519,8 @@ asmlinkage void plat_irq_dispatch(void)
         unsigned long s, off;
 
         if (pending & CAUSEF_IP7) {
-                do_IRQ(MIPS_CPU_IRQ_BASE + 7);
-                return;
+                off = MIPS_CPU_IRQ_BASE + 7;
+                goto handle;
         } else if (pending & CAUSEF_IP2) {
                 s = IC0_REQ0INT;
                 off = AU1000_INTC0_INT_BASE;
@@ -542,7 +542,9 @@ spurious:
                 spurious_interrupt();
                 return;
         }
-        do_IRQ(__ffs(s) + off);
+        off += __ffs(s);
+handle:
+        do_IRQ(off);
 }
 
 /* setup edge/level and assign request 0/1 */