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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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13
MdeModulePkg/Library/GenericBdsLib/BdsConsole.c
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@@ -309,7 +309,7 @@ BdsLibConnectAllConsoles (
&HandleCount,
&HandleBuffer
);
for (Index = 0; Index < HandleCount; Index++) {
gBS->HandleProtocol (
HandleBuffer[Index],
@@ -416,7 +416,7 @@ BdsLibConnectAllDefaultConsoles (
@param PixelHeight Height of GopBlt/BmpImage in pixels
@param PixelWidth Width of GopBlt/BmpImage in pixels
@retval EFI_SUCCESS GopBlt and GopBltSize are returned.
@retval EFI_SUCCESS GopBlt and GopBltSize are returned.
@retval EFI_UNSUPPORTED BmpImage is not a valid *.BMP image
@retval EFI_BUFFER_TOO_SMALL The passed in GopBlt buffer is not big enough.
GopBltSize will contain the required size.
@@ -587,7 +587,7 @@ ConvertBmpToGopBlt (
/**
Use Console Control Protocol to lock the Console In Spliter virtual handle.
Use Console Control Protocol to lock the Console In Spliter virtual handle.
This is the ConInHandle and ConIn handle in the EFI system table. All key
presses will be ignored until the Password is typed in. The only way to
disable the password is to type it in to a ConIn device.
@@ -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,
@@ -869,7 +870,7 @@ EnableQuietBoot (
}
/**
Use Console Control to turn on UGA based Simple Text Out consoles. The UGA
Use Console Control to turn on UGA based Simple Text Out consoles. The UGA
Simple Text Out screens will now be synced up with all non UGA output devices
@retval EFI_SUCCESS UGA devices are back in text mode and synced up.