rt2x00: Allow dynamic addition of PCI/USB IDs.

Both USB and PCI drivers allow a system administrator to dynamically add
USB/PCI IDs to the device table that a driver supports via the
/sys/bus/{usb,pci,pci_express}/drivers/<driver-name>/new_id files.

However, for the rt2x00 drivers using this method currently crashes the
system with a NULL pointer failure.

This is due to the set-up of rt2x00 where the probe functions require a
rt2x00_ops structure in the driver_info field of the probed device. As
this field is empty for the dynamically added devices this fails for
these devices.

Fix this by introducing driver-specific probe wrappers that do nothing
but calling the bus-specific probe functions with the rt2x00_ops structure
as an argument, rather than depending on the driver_info field.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 7 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.h b/drivers/net/wireless/rt2x00/rt2x00usb.h
index 6aeba71b665b..52b09d2e11de 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.h
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.h
@@ -35,12 +35,6 @@
 })
 
 /*
- * This variable should be used with the
- * usb_driver structure initialization.
- */
-#define USB_DEVICE_DATA(__ops)	.driver_info = (kernel_ulong_t)(__ops)
-
-/*
  * For USB vendor requests we need to pass a timeout
  * time in ms, for this we use the REGISTER_TIMEOUT,
  * however when loading firmware a higher value is
@@ -433,7 +427,7 @@ void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev);
  * USB driver handlers.
  */
 int rt2x00usb_probe(struct usb_interface *usb_intf,
-		    const struct usb_device_id *id);
+		    const struct rt2x00_ops *ops);
 void rt2x00usb_disconnect(struct usb_interface *usb_intf);
 #ifdef CONFIG_PM
 int rt2x00usb_suspend(struct usb_interface *usb_intf, pm_message_t state);