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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Nvidia 640M devinit fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99372#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Nvidia 640M devinit fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99372">bug 99372</a>
from <span class="vcard"><a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> <span class="fn">Ilia Mirkin</span></a>
</span></b>
<pre>OK, so ... similar issue as before - it creates a temporary buffer sized to the
incoming argument's size, and THEN truncates the size argument. Great.... so we
just get the first 4K back with the "fast acpi" method. However at that point,
the checksum really oughtn't match. But I don't see the "checksum failed"
message. So it does match? Or somehow the second bogus image increases the
score to 4? Not sure...
Method (_ROM, 2, NotSerialized) // _ROM: Read-Only Memory
{
Local0 = Arg0
Local1 = Arg1
Name (VROM, Buffer (Local1)
{
0x00 /* . */
})
If (Local1 > 0x1000)
{
Local1 = 0x1000
}
If (Arg0 > RVBS)
{
Return (VROM) /* \_SB_.PCI0.PEG0.PEGP._ROM.VROM */
}
Local2 = (Arg0 + Arg1)
If (Local2 > RVBS)
{
Local1 = (RVBS - Local0)
}
If (Local0 < 0x8000)
{
Mid (VBS1, Local0, Local1, VROM) /* \_SB_.PCI0.PEG0.PEGP._ROM.VROM */
}
Else
{
Local0 -= 0x8000
If (Local0 < 0x8000)
{
Mid (VBS2, Local0, Local1, VROM) /* \_SB_.PCI0.PEG0.PEGP._ROM.VROM
*/
}
Else
{
Local0 -= 0x8000
If (Local0 < 0x8000)
{
Mid (VBS3, Local0, Local1, VROM) /*
\_SB_.PCI0.PEG0.PEGP._ROM.VROM */
}
Else
{
Local0 -= 0x8000
If (Local0 < 0x8000)
{
Mid (VBS4, Local0, Local1, VROM) /*
\_SB_.PCI0.PEG0.PEGP._ROM.VROM */
}
}
}
}
Return (VROM) /* \_SB_.PCI0.PEG0.PEGP._ROM.VROM */
}</pre>
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