[PATCH] PCI: Documentation: no more device ids
Document that we don't like to add more PCI device ids
but are happy to accept PCI vendor ids for linux/include/pci_ids.h
Original text from Jeff Garzik.
Signed-off-by: Ingo Oeser <netdev@axxeo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/Documentation/pci.txt b/Documentation/pci.txt
index 711210b..66bbbf1 100644
--- a/Documentation/pci.txt
+++ b/Documentation/pci.txt
@@ -259,7 +259,17 @@
to be handled by platform and generic code, not individual drivers.
-8. Obsolete functions
+8. Vendor and device identifications
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+For the future, let's avoid adding device ids to include/linux/pci_ids.h.
+
+PCI_VENDOR_ID_xxx for vendors, and a hex constant for device ids.
+
+Rationale: PCI_VENDOR_ID_xxx constants are re-used, but device ids are not.
+ Further, device ids are arbitrary hex numbers, normally used only in a
+ single location, the pci_device_id table.
+
+9. Obsolete functions
~~~~~~~~~~~~~~~~~~~~~
There are several functions which you might come across when trying to
port an old driver to the new PCI interface. They are no longer present