From b570eb3a78a3096af55979ce63d96f5fc012f9e5 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Wed, 13 Apr 2022 14:51:06 -0400
Subject: [PATCH 03/11] softmmu/physmem: Simplify flatview_write and
 address_space_access_valid
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RH-Author: Jon Maloy <jmaloy@redhat.com>
RH-MergeRequest: 158: hw/intc/arm_gicv3: Check for !MEMTX_OK instead of MEMTX_ERROR
RH-Commit: [2/3] 66281d1c439be549c7890a662a817dd1b9367ef2 (jmaloy/qemu-kvm)
RH-Bugzilla: 2075686
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Peter Xu <peterx@redhat.com>

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2075686
Upstream: Merged
CVE: CVE-2021-3750

commit 58e74682baf4e1ad26b064d8c02e5bc99c75c5d9
Author: Philippe Mathieu-Daudé <philmd@redhat.com>
Date:   Wed Dec 15 19:24:20 2021 +0100

    softmmu/physmem: Simplify flatview_write and address_space_access_valid

    Remove unuseful local 'result' variables.

    Reviewed-by: Peter Xu <peterx@redhat.com>
    Reviewed-by: David Hildenbrand <david@redhat.com>
    Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
    Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
    Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
    Message-Id: <20211215182421.418374-3-philmd@redhat.com>
    Signed-off-by: Thomas Huth <thuth@redhat.com>

(cherry picked from commit 58e74682baf4e1ad26b064d8c02e5bc99c75c5d9)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
---
 softmmu/physmem.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/softmmu/physmem.c b/softmmu/physmem.c
index 3524c04c2a..483a31be81 100644
--- a/softmmu/physmem.c
+++ b/softmmu/physmem.c
@@ -2815,14 +2815,11 @@ static MemTxResult flatview_write(FlatView *fv, hwaddr addr, MemTxAttrs attrs,
     hwaddr l;
     hwaddr addr1;
     MemoryRegion *mr;
-    MemTxResult result = MEMTX_OK;
 
     l = len;
     mr = flatview_translate(fv, addr, &addr1, &l, true, attrs);
-    result = flatview_write_continue(fv, addr, attrs, buf, len,
-                                     addr1, l, mr);
-
-    return result;
+    return flatview_write_continue(fv, addr, attrs, buf, len,
+                                   addr1, l, mr);
 }
 
 /* Called within RCU critical section.  */
@@ -3119,12 +3116,10 @@ bool address_space_access_valid(AddressSpace *as, hwaddr addr,
                                 MemTxAttrs attrs)
 {
     FlatView *fv;
-    bool result;
 
     RCU_READ_LOCK_GUARD();
     fv = address_space_to_flatview(as);
-    result = flatview_access_valid(fv, addr, len, is_write, attrs);
-    return result;
+    return flatview_access_valid(fv, addr, len, is_write, attrs);
 }
 
 static hwaddr
-- 
2.27.0