From: Julien Grall <julien.grall@linaro.org>
Date: Tue, 3 Mar 2015 16:36:16 +0000 (+0000)
Subject: xen/arm: gic: Correctly check if an IRQ is valid in gic_interrupt
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~3662
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/success//%22http:/www.example.com/cgi/success/?a=commitdiff_plain;h=3508bd4d7648501cbfb879585341e6a80f71581c;p=xen.git

xen/arm: gic: Correctly check if an IRQ is valid in gic_interrupt

The IRQ 1020 is reserved for special purpose, so the check should be
"irq < 1020" rather than "irq < 1021".

Signed-off-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
---

diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
index 390c8b05f9..940fb8eafa 100644
--- a/xen/arch/arm/gic.c
+++ b/xen/arch/arm/gic.c
@@ -570,7 +570,7 @@ void gic_interrupt(struct cpu_user_regs *regs, int is_fiq)
         /* Reading IRQ will ACK it */
         irq = gic_hw_ops->read_irq();
 
-        if ( likely(irq >= 16 && irq < 1021) )
+        if ( likely(irq >= 16 && irq < 1020) )
         {
             local_irq_enable();
             do_IRQ(regs, irq, is_fiq);