ovmf: Fix build with gcc7

backport a patch which fixing warnings with gcc7

(From OE-Core rev: 74fb6043f6d74b84f7efc282ac6cfc54fcb71882)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 46 insertions, 0 deletions

diff --git a/meta/recipes-core/ovmf/ovmf/0001-MdeModulePkg-UefiHiiLib-Fix-incorrect-comparison-exp.patch b/meta/recipes-core/ovmf/ovmf/0001-MdeModulePkg-UefiHiiLib-Fix-incorrect-comparison-exp.patch
new file mode 100644
index 0000000000..0529a27b16
--- /dev/null
+++ b/meta/recipes-core/ovmf/ovmf/0001-MdeModulePkg-UefiHiiLib-Fix-incorrect-comparison-exp.patch
@@ -0,0 +1,45 @@
+From 73692710d50da1f421b0e6ddff784ca3135389b3 Mon Sep 17 00:00:00 2001
+From: Dandan Bi <dandan.bi@intel.com>
+Date: Sat, 1 Apr 2017 10:31:14 +0800
+Subject: [PATCH] MdeModulePkg/UefiHiiLib:Fix incorrect comparison expression
+
+Fix the incorrect comparison between pointer and constant zero character.
+
+https://bugzilla.tianocore.org/show_bug.cgi?id=416
+
+V2: The pointer StringPtr points to a string returned
+by ExtractConfig/ExportConfig, if it is NULL, function
+InternalHiiIfrValueAction will return FALSE. So in
+current usage model, the StringPtr can not be NULL before
+using it, so we can add ASSERT here.
+
+Cc: Eric Dong <eric.dong@intel.com>
+Cc: Liming Gao <liming.gao@intel.com>
+Contributed-under: TianoCore Contribution Agreement 1.0
+Signed-off-by: Dandan Bi <dandan.bi@intel.com>
+Reviewed-by: Eric Dong <eric.dong@intel.com>
+---
+Upstream-Status: Backport
+
+ MdeModulePkg/Library/UefiHiiLib/HiiLib.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/MdeModulePkg/Library/UefiHiiLib/HiiLib.c b/MdeModulePkg/Library/UefiHiiLib/HiiLib.c
+index 8579501..46ca7bc 100644
+--- a/MdeModulePkg/Library/UefiHiiLib/HiiLib.c
++++ b/MdeModulePkg/Library/UefiHiiLib/HiiLib.c
+@@ -2180,8 +2180,9 @@ InternalHiiIfrValueAction (
+   }

+   

+   StringPtr = ConfigAltResp;

+-  

+-  while (StringPtr != L'\0') {

++  ASSERT (StringPtr != NULL);

++

++  while (*StringPtr != L'\0') {

+     //

+     // 1. Find <ConfigHdr> GUID=...&NAME=...&PATH=...

+     //

+-- 
+1.9.1
+
diff --git a/meta/recipes-core/ovmf/ovmf_git.bb b/meta/recipes-core/ovmf/ovmf_git.bb
index 73fdfc6239..9d988e9d41 100644
--- a/meta/recipes-core/ovmf/ovmf_git.bb
+++ b/meta/recipes-core/ovmf/ovmf_git.bb
@@ -14,6 +14,7 @@ SRC_URI = "git://github.com/tianocore/edk2.git;branch=master \
         file://0002-ovmf-update-path-to-native-BaseTools.patch \
         file://0003-BaseTools-makefile-adjust-to-build-in-under-bitbake.patch \
         file://VfrCompile-increase-path-length-limit.patch \
+        file://0001-MdeModulePkg-UefiHiiLib-Fix-incorrect-comparison-exp.patch \
         "
 
 SRC_URI_append_class-target = " \