Re: PCI driver

[Manu Abraham <abraham.manu@gmail.com>]

Jiri Slaby wrote:

> Manu Abraham napsal(a):
>
> > Jiri Slaby wrote:
> >
> > > Manu Abraham napsal(a):
> > >
> > > > Now that i have been trying to implement the driver using the new 
> > > > PCI API, i feel a bit lost at the different changes gone into the 
> > > > PCI API. So if someone could give me a brief idea how a minimal PCI 
> > > > probe routine should consist of, that would be quite helpful.
> > >
> > >
> > >
> > >
> > > Maybe, you want to read http://lwn.net/Kernel/LDD3/, chapter 12, 
> > > pages 311+.
> >
> > I have been updating myself from LDD2 to LDD3. What i was wondering 
> > was in what order should i be calling the functions.
>
>
> You won't call anything, kernel does. You only register driver.
> struct pcitbl {venids, devids}
>
> struct driver ... = {probe=a, remove=b, tbl=pcitbl};
> a() { if device from pcitbl is in the system (or has been added before 
> some little time) this function is called}
> b() {if the device was removed from system: modules and hotplug: never 
> called; modules: so if modules unload; if both: if the device was 
> removed on the fly, or module unload}
>
> module_init() { register_driver(driver)}
> module_exit() { unregister_driver(driver); }

I was wondering whether pci_enable_device() should come first or 
pci_dev_put() in the probe routine.


Thanks,
Manu




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