From f1fc6645a4d2cb944320ce8ed1e40f88059779e1 Mon Sep 17 00:00:00 2001
From: Manuel Lauss <manuel.lauss@googlemail.com>
Date: Tue, 13 Oct 2009 20:26:31 +0200
Subject: [PATCH] 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>
---
arch/mips/alchemy/common/irq.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/arch/mips/alchemy/common/irq.c b/arch/mips/alchemy/common/irq.c
index f5b148af8b8c4e..960a3ee2bd4cbd 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 */
--
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