2010/6/2 Michał Nazarewicz <m.nazarewicz@xxxxxxxxxxx>: > On Wed, 02 Jun 2010 15:02:54 +0200, Xiaofan Chen <xiaofanc@xxxxxxxxx> wrote: >> >> [Version] >> Signature="$Windows NT$" >> Class=Ports >> ClassGuid={4D36E978-E325-11CE-BFC1-08002BE10318} >> Provider=%MFGNAME% >> LayoutFile=layout.inf >> CatalogFile=%MFGFILENAME%.cat > > So, what is this cat file for? I changed the IDs and the INF file started > working even though I expected that this file will be required. I'm > wondering is it because I have something installed on my Windows > box that others may miss? You do not need the cat file in this case. Microchip's Driver Package is WHQLed, in that case, the cat file will have the necessary digital certificate (Verisign Class 3 code signing certificate for WHQL). You can also sign your driver package with other valid certificates (GlobalSign) for KMCS requirement. In this case, the kernel driver is already signed by Microsoft, you do not need the signed driver package (cat file) to load the driver in 64bit Vista/Win7. But there will be a warning (for 32bit/64bit XP/Vista/Win7). Once you pay money and go through WHQL process, the warning will not be there. In a word, that line can be deleted. > And what's with the layout.inf. Ah, I think that should not be there now. Only system provided INF file should have that line (eg: mdmcpq.inf which is included in the Microchip INF file). You can remove that line. More information: http://support.microsoft.com/kb/837637 -- Xiaofan http://mcuee.blogspot.com -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html