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fixed potential NULL pointer reference issue.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7146 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
vanjeff 2008-12-29 07:10:16 +00:00
parent ca9d3a9ded
commit 73e4adbe68
2 changed files with 78 additions and 77 deletions
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5
MdeModulePkg/Library/GenericBdsLib/BdsConsole.c
View File

@ -691,7 +691,8 @@ EnableQuietBoot (
if (GraphicsOutput != NULL) {
SizeOfX = GraphicsOutput->Mode->Info->HorizontalResolution;
SizeOfY = GraphicsOutput->Mode->Info->VerticalResolution;
} else if (FeaturePcdGet (PcdUgaConsumeSupport)) {
} else if (UgaDraw != NULL && FeaturePcdGet (PcdUgaConsumeSupport)) {
Status = UgaDraw->GetMode (UgaDraw, &SizeOfX, &SizeOfY, &ColorDepth, &RefreshRate);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
@ -835,7 +836,7 @@ EnableQuietBoot (
Height,
Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
);
} else if (FeaturePcdGet (PcdUgaConsumeSupport)) {
} else if (UgaDraw != NULL && FeaturePcdGet (PcdUgaConsumeSupport)) {
Status = UgaDraw->Blt (
UgaDraw,
(EFI_UGA_PIXEL *) Blt,

2
MdePkg/Library/UefiLib/UefiLibPrint.c
View File

@ -393,7 +393,7 @@ InternalPrintGraphic (
if (GraphicsOutput != NULL) {
HorizontalResolution = GraphicsOutput->Mode->Info->HorizontalResolution;
VerticalResolution = GraphicsOutput->Mode->Info->VerticalResolution;
} else if (FeaturePcdGet (PcdUgaConsumeSupport)) {
} else if (UgaDraw != NULL && FeaturePcdGet (PcdUgaConsumeSupport)) {
UgaDraw->GetMode (UgaDraw, &HorizontalResolution, &VerticalResolution, &ColorDepth, &RefreshRate);
} else {
Status = EFI_UNSUPPORTED;