On Wed, Apr 18, 2012 at 12:59 PM, Javier Martinez Canillas <martinez.javier@xxxxxxxxx> wrote: > On Wed, Apr 18, 2012 at 11:16 AM, Li Haifeng <omycle@xxxxxxxxx> wrote: >> I make a driver module and built in the kernel. There are three devices use >> the same driver on the hardware platform. To use each device, the probe >> function of the driver module should be probed. So, the driver module is >> registered in the kernel. >> >> My question is, how times should the probe function of the driver be called >> and create nodes in devfs to corresponding with the three devices? >> > > Your driver probe function has to be called only once. You should have > in your driver a software representation of each device and register > each one with the corresponding subsystem and with the kernel kernel > device model to populate /dev with your device nodes. > > How do you represent your devices internally is up to you, it can be > assigned on your module init function as a static array or you can do > it dynamically using a linked list. > > Look at any driver inside drivers/char for reference. > Sorry, didn't understand your question. Forget about my answer and sorry for the noise :) Regards, -- Javier Martínez Canillas (+34) 682 39 81 69 Barcelona, Spain _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
