Hi Josue,
Since this is a read-only filesystem you need to add the device
as part of the deploy. Depending on which platform you're using
go to the Makefile in uClinux/vendors/<manufacture>/<evb>/Makefile
and add scull0 there. Look at the other devices included in the
Makefile for examples on how to do this.
Regards,
Matt
Josue de Freitas wrote:
Hi people,
I'm trying to build the scull module example from Chapter 3 of Linux
Device Drivers book and it's not working. I create a /dev/scull0 (with
fixed major number, which is also configured on the module source) but
when I stand up the module and try something like "dd if=/dev/zero
of=/dev/scull0" it gives a message "dd: /dev/scull0: No such device".
According to the book a "cat /proc/devices" should show the scull device
when the module is up but nothing about scull is there, nothing changes
on /proc/devices with or without the module loaded.
So the main question is: dynamic module loading works perfectly on a
read-only filesystem on uClinux ?
If this is not the best place to this kind of question, please tell me
where I can send this doubt. ;)
Thanks in advance, Josue.
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