https://bugs.freedesktop.org/show_bug.cgi?id=75985 --- Comment #66 from Lukas Wunner --- (In reply to Maik Freudenberg from comment #65) > Now with the acpi bug fixed, I applied both of your v2 patchsets with some > nip/tuck to a 4.16rc4+ kernel and ran into the next oddity: while the pci > quirk in general works, re-reading the header type will always return 0x00 > so the hda device is not added. > lspci confirms that the quirk is otherwise working: > 00: de 10 92 12 07 00 10 00 a1 00 02 03 00 00 80 00 > 480: 00 00 00 00 17 00 00 00 00 00 00 02 00 00 00 00 Hm, the multifunction bit is set. Try adding an msleep(100) after setting the bit at offset 0x488 and before re-reading the header type register. 100 ms is likely way too much, this is just to ensure it's not too short. Also, try changing DECLARE_PCI_FIXUP_CLASS_HEADER to DECLARE_PCI_FIXUP_CLASS_EARLY. Shouldn't make a difference but maybe I missed something. Does it work if you just set gpu->multifunction = 1? -- You are receiving this mail because: You are the assignee for the bug.