On 06/27/2003 07:10 PM Christophe.LINDHEIMER at fr.thalesgroup.com wrote:
> Hi.
>
> I am working on a PPC860.
>
> I have developped two drivers.
>
> The driver 2 needs to use functions that are in driver 1.
> driver 1 is /dev/visu.
>
> I thought I could make fd=open("/dev/visu", 0) in init of the driver 2 but I
> get ooops.For file access within the kernel see for example: http://www.fenrus.demon.nl/kernel.html > I also need to make > I also need to make something like ioctl(fd, IO_Special... )but the function > ioctl is unknown in the kernel. > > What is the right way to work when you need to do that ? Using file access in the kernel is usually a bad thing. I think it's easier and more straightforward to provide a small set of exported kernel functions which the second (driver) module can use. Hope it helps. Wolfgang. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
