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authorGertjan van Wingerde <gwingerde@gmail.com>2011-04-18 15:32:13 +0200
committerJohn W. Linville <linville@tuxdriver.com>2011-04-19 15:39:45 -0400
commite01ae27f8ce6bd3ee26ef33c704f62449ce8233b (patch)
tree28c022b0e755e244e4834f741d2bfce600606624 /drivers/net/wireless/rt2x00/rt2400pci.c
parentce2919c9fffe2aa52f9c3e327176d03764dbf9b5 (diff)
downloadblackbird-op-linux-e01ae27f8ce6bd3ee26ef33c704f62449ce8233b.tar.gz
blackbird-op-linux-e01ae27f8ce6bd3ee26ef33c704f62449ce8233b.zip
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>
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2400pci.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2400pci.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2400pci.c b/drivers/net/wireless/rt2x00/rt2400pci.c
index 01e951717f0f..d4acdde7c75a 100644
--- a/drivers/net/wireless/rt2x00/rt2400pci.c
+++ b/drivers/net/wireless/rt2x00/rt2400pci.c
@@ -1802,10 +1802,11 @@ static const struct rt2x00_ops rt2400pci_ops = {
* RT2400pci module information.
*/
static DEFINE_PCI_DEVICE_TABLE(rt2400pci_device_table) = {
- { PCI_DEVICE(0x1814, 0x0101), PCI_DEVICE_DATA(&rt2400pci_ops) },
+ { PCI_DEVICE(0x1814, 0x0101) },
{ 0, }
};
+
MODULE_AUTHOR(DRV_PROJECT);
MODULE_VERSION(DRV_VERSION);
MODULE_DESCRIPTION("Ralink RT2400 PCI & PCMCIA Wireless LAN driver.");
@@ -1813,10 +1814,16 @@ MODULE_SUPPORTED_DEVICE("Ralink RT2460 PCI & PCMCIA chipset based cards");
MODULE_DEVICE_TABLE(pci, rt2400pci_device_table);
MODULE_LICENSE("GPL");
+static int rt2400pci_probe(struct pci_dev *pci_dev,
+ const struct pci_device_id *id)
+{
+ return rt2x00pci_probe(pci_dev, &rt2400pci_ops);
+}
+
static struct pci_driver rt2400pci_driver = {
.name = KBUILD_MODNAME,
.id_table = rt2400pci_device_table,
- .probe = rt2x00pci_probe,
+ .probe = rt2400pci_probe,
.remove = __devexit_p(rt2x00pci_remove),
.suspend = rt2x00pci_suspend,
.resume = rt2x00pci_resume,
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