[Xen-devel] [PATCH] efi: Fix booting failure with UEFI on ARM

[Shannon Zhao <zhaoshenglong@xxxxxxxxxx>]

From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>

Commit 9fd08b4 (efi: split out efi_get_gop()) splits out the
codes getting the pointer to GOP as efi_get_gop(), but it doesn't
initialize the variable handles and gop to NULL like what the original
codes do. This will cause booting failure on ARM while printing below
logs:
        Xen 4.7-unstable (c/s Tue Oct 13 14:40:28 2015 +0100 git:7a92036) EFI 
loader
        Synchronous Exception at 0x00000000FECB021C

Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
---
 xen/common/efi/boot.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/common/efi/boot.c b/xen/common/efi/boot.c
index 29ce66a..d233cef 100644
--- a/xen/common/efi/boot.c
+++ b/xen/common/efi/boot.c
@@ -636,8 +636,8 @@ static void __init efi_console_set_mode(void)
 static EFI_GRAPHICS_OUTPUT_PROTOCOL __init *efi_get_gop(void)
 {
     EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *mode_info;
-    EFI_GRAPHICS_OUTPUT_PROTOCOL *gop;
-    EFI_HANDLE *handles;
+    EFI_GRAPHICS_OUTPUT_PROTOCOL *gop = NULL;
+    EFI_HANDLE *handles = NULL;
     EFI_STATUS status;
     UINTN info_size, size = 0;
     static EFI_GUID __initdata gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
-- 
2.0.4



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