Messages in this thread | | | Date | Sat, 8 Mar 2003 20:09:43 +0000 | From | Russell King <> | Subject | Re: PCI driver module unload race? |
| |
On Sat, Mar 08, 2003 at 11:12:37AM -0800, Greg KH wrote: > On Sat, Mar 08, 2003 at 10:47:49AM +0000, Russell King wrote: > > Hi, > > > > What prevents the following scenario from happening? It's purely > > theoretical - I haven't seen this occuring. > > > > - Load PCI driver. > > > > - PCI driver registers using pci_module_init(), and adds itself to sysfs. > > > > - Hot-plugin a PCI device which uses this driver. sysfs matches the PCI > > driver, and calls the PCI drivers probe function. > > Ugh, yes you are correct, I can't believe I missed this before. > > How does this patch look?
Hrm, I'm wondering whether this should be part of the device model infrastructure. After all, surely every subsystems device driver which could be a module would need this to prevent unload races?
-- Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux http://www.arm.linux.org.uk/personal/aboutme.html
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |