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Verify VBE is found and not anything else, is a safe check.

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svn path=/trunk/; revision=19499
This commit is contained in:
Magnus Olsen 2005-11-23 20:37:38 +00:00
parent 8553d872c8
commit 9e0866bd57
1 changed files with 7 additions and 0 deletions
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7
reactos/drivers/video/miniport/vbe/vbemp.c
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@ -241,6 +241,13 @@ VBEInitialize(PVOID HwDeviceExtension)
&VBEDeviceExtension->VbeInfo, &VBEDeviceExtension->VbeInfo,
sizeof(VBEDeviceExtension->VbeInfo)); sizeof(VBEDeviceExtension->VbeInfo));
/* Verify VBE is found and not anýthing else */
if (strncmp(VBEDeviceExtension->VbeInfo.Signature,"VESA",4) != 0)
{
DPRINT("No VBE BIOS present\n");
return FALSE;
}
/* Dectect Bad VBE BIOS some Graphice card report 0x200 when they are VBE 1.2 */ /* Dectect Bad VBE BIOS some Graphice card report 0x200 when they are VBE 1.2 */
if (VBEDeviceExtension->VbeInfo.OemVendorNamePtr == 0 && VBEDeviceExtension->VbeInfo.Version == 0x200) if (VBEDeviceExtension->VbeInfo.OemVendorNamePtr == 0 && VBEDeviceExtension->VbeInfo.Version == 0x200)
{ {