From: Anthony PERARD <anthony.perard@citrix.com>
Date: Fri, 26 Apr 2013 13:16:31 +0000 (+0100)
Subject: xen/arm: Fix return value when write is ignored in VGIC
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~6953
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/%22bookmarks://%22Dat/%22http:/www.example.com/cgi/%22https:/%22bookmarks:/%22Dat?a=commitdiff_plain;h=f2f34db831d33e9121535b00c46633e8d4664758;p=xen.git

xen/arm: Fix return value when write is ignored in VGIC

If a write is ignored, the function should return success.

Currently Xen will throw a data abort exception if the write in VGIC is
ignored.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
---

diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c
index 4d8da0242e..a984621e89 100644
--- a/xen/arch/arm/vgic.c
+++ b/xen/arch/arm/vgic.c
@@ -550,7 +550,7 @@ bad_width:
 
 write_ignore:
     if ( dabt.size != 2 ) goto bad_width;
-    return 0;
+    return 1;
 }
 
 static int vgic_distr_mmio_check(struct vcpu *v, paddr_t addr)