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rt2x00: Allow dynamic addition of PCI/USB IDs.

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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>
This commit is contained in:
Gertjan van Wingerde
2011-04-18 15:32:13 +02:00
committed by John W. Linville
parent ce2919c9ff
commit e01ae27f8c
11 changed files with 404 additions and 369 deletions
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10
drivers/net/wireless/rt2x00/rt2500pci.c
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@@ -2095,7 +2095,7 @@ static const struct rt2x00_ops rt2500pci_ops = {
* RT2500pci module information.
*/
static DEFINE_PCI_DEVICE_TABLE(rt2500pci_device_table) = {
{ PCI_DEVICE(0x1814, 0x0201), PCI_DEVICE_DATA(&rt2500pci_ops) },
{ PCI_DEVICE(0x1814, 0x0201) },
{ 0, }
};
@@ -2106,10 +2106,16 @@ MODULE_SUPPORTED_DEVICE("Ralink RT2560 PCI & PCMCIA chipset based cards");
MODULE_DEVICE_TABLE(pci, rt2500pci_device_table);
MODULE_LICENSE("GPL");
static int rt2500pci_probe(struct pci_dev *pci_dev,
const struct pci_device_id *id)
{
return rt2x00pci_probe(pci_dev, &rt2500pci_ops);
}
static struct pci_driver rt2500pci_driver = {
.name = KBUILD_MODNAME,
.id_table = rt2500pci_device_table,
.probe = rt2x00pci_probe,
.probe = rt2500pci_probe,
.remove = __devexit_p(rt2x00pci_remove),
.suspend = rt2x00pci_suspend,
.resume = rt2x00pci_resume,