On Wed, 2003-11-19 at 06:14, Michael Schmitz wrote: > > > > Just in case it's a similar problem with radeonfb :-) > > > > > > No, radeonfb uses the PCI stuff nowadays, but I'll look into fixing > > > atyfb ;) > > > > It's worse than I originally assumed: the kernel hangs in > > aty_power_mgmt(). The info and par pointers are OK. > > Update: compiling the kernel without preemption seems to fix it. What's > needed to make critical sections in the framebuffer code preemption safe? > (local_irq_save() didn't help, FWIW)
Ahhhhh.... that explains it ! Do no use CONFIG_PREEMPT if you want some thing that works ;) Preempt is a toy that isn't quite right yet (actually, some arch code and drivers aren't). I'm not sure what's up with it yet, it may be more than just adding a local_irq_save indeed. Ben.
