From: Stefano Stabellini <sstabellini@kernel.org>
Date: Tue, 6 Nov 2018 22:05:57 +0000 (-0800)
Subject: xen/arm: initialize access
X-Git-Tag: archive/raspbian/4.14.0+80-gd101b417b7-1+rpi1^2~63^2~3013
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=8d84e701fdc3825f65e32e34f14c0f9ccfe359e1;p=xen.git

xen/arm: initialize access

Initialize variable *access before returning it back to the caller.
It makes the code a bit nicer and it is a safety certification
requirement.

M3CM Rule-9.1: The value of an object with automatic storage duration
shall not be read before it has been set

QAVerify: 2962
Signed-off-by: Stefano Stabellini <stefanos@xilinx.com>
Acked-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
Acked-by: Julien Grall <julien.grall@arm.com>
CC: rcojocaru@bitdefender.com
CC: Tamas K Lengyel <tamas@tklengyel.com>
---

diff --git a/xen/arch/arm/mem_access.c b/xen/arch/arm/mem_access.c
index 653d96050d..86ddb29c55 100644
--- a/xen/arch/arm/mem_access.c
+++ b/xen/arch/arm/mem_access.c
@@ -47,6 +47,7 @@ static int __p2m_get_mem_access(struct domain *d, gfn_t gfn,
     };
 
     ASSERT(p2m_is_locked(p2m));
+    *access = p2m->default_access;
 
     /* If no setting was ever set, just return rwx. */
     if ( !p2m->mem_access_enabled )