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| author | Gertjan van Wingerde <gwingerde@gmail.com> | 2011-04-18 15:32:13 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-04-19 15:39:45 -0400 |
| commit | e01ae27f8ce6bd3ee26ef33c704f62449ce8233b (patch) | |
| tree | 28c022b0e755e244e4834f741d2bfce600606624 /drivers/net/wireless/rt2x00/rt2500pci.c | |
| parent | ce2919c9fffe2aa52f9c3e327176d03764dbf9b5 (diff) | |
| download | lwn-e01ae27f8ce6bd3ee26ef33c704f62449ce8233b.tar.gz lwn-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/rt2500pci.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2500pci.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c index c8deeeb9d812..15f5649e2cae 100644 --- a/drivers/net/wireless/rt2x00/rt2500pci.c +++ b/drivers/net/wireless/rt2x00/rt2500pci.c @@ -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, |