On 11/05/07, Michael Cashwell <mboards@xxxxxxxxxxxx> wrote:
Greeting all, I'm trying to make sense of an Oops in a driver I'm trying to port from 2.4 to 2.6.21 on an embedded ARM platform. I've scoured every archive and Google page I could find but because my issue is very specific I can't find anything that helps. In a nutshell, I have the module building and loading for 2.6 but when a user land app attempts to use the driver it fails (unable to handle kernel paging request). The address in question is of the CPU's internal peripheral registers. The key issue is that I can access that address from kernel mode just fine. But the failure happens when the user land app down-calls via an ioctl into the driver module. The oops message says it was "Mode SVC_32 Segment user".
Let's see the Oops as well as the driver source code. That'll make it a lot easier to help you. Also, what's your userspace etc like (scripts/ver_linux output would be good). -- Jesper Juhl <jesper.juhl@xxxxxxxxx> Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html Plain text mails only, please http://www.expita.com/nomime.html -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
