path: root/Documentation
diff options
authorJean Delvare <khali@linux-fr.org>2008-08-17 21:06:59 +0200
committerJesse Barnes <jbarnes@virtuousgeek.org>2008-10-20 10:48:35 -0700
commitb41d6cf38e27a940d998d989526a9748de1bf028 (patch)
treea2ae90005e000d4f9d16637171ff11dd31a4917a /Documentation
parentedbc25caaa492a82e19baa915f1f6b0a0db6554d (diff)
PCI: Check dynids driver_data value for validity
Only accept dynids whose driver_data value matches one of the driver's pci_driver_id entries. This prevents the user from accidentally passing values the drivers do not expect. Cc: Milton Miller <miltonm@bga.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'Documentation')
1 files changed, 4 insertions, 0 deletions
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.