On Tue, Oct 23, 2001 at 08:40:31AM +0200, Marcel Wijlaars wrote:
> In the 2.2 kernel series check_region, request_region and other
> functions like it are declared as functions returning void.
> In the 2.4 kernel series these functions return a pointer value so that
> an error can be signaled, if a NULL pointer is returned the check or
> request failed.
In 2.2 an error is signalled by int return from check_region.
> In the parport_pc.c file the parport_pc_probe_port function does a "if (
> check_region(base,3) ) return NULL;" which I think should be "if (
> !check_region(base,3) ) return NULL;"
No, it is correct as it is.
> If I apply this crude hack to parport_pc.c and modify parport_cs.c so it
> known there are only 3 parport modes (compared to 5 in the 2.2 kernel
> series) the pcmcia parport module works just fine
That indicates a bug further along in the code which is only triggered
when one of the others modes is thought to be available. Try knocking
out some of the other mode tests one by one.
Tim.
*/
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