X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=Documentation%2FPCI%2Fpci.txt;h=fd4907a2968cb3fab71e92286c24da0244dcfcae;hb=b41d6cf38e27a940d998d989526a9748de1bf028;hp=8d4dc6250c582821ccca5b89127833e2b14bd4ee;hpb=96916090f488986a4ebb8e9ffa6a3b50881d5ccd;p=linux-2.6-omap-h63xx.git

diff --git a/Documentation/PCI/pci.txt b/Documentation/PCI/pci.txt
index 8d4dc6250c5..fd4907a2968 100644
--- a/Documentation/PCI/pci.txt
+++ b/Documentation/PCI/pci.txt
@@ -163,6 +163,10 @@ need pass only as many optional fields as necessary:
 	o class and classmask fields default to 0
 	o driver_data defaults to 0UL.
 
+Note that driver_data must match the value used by any of the pci_device_id
+entries defined in the driver. This makes the driver_data field mandatory
+if all the pci_device_id entries have a non-zero driver_data value.
+
 Once added, the driver probe routine will be invoked for any unclaimed
 PCI devices listed in its (newly updated) pci_ids list.