On Thu, Sep 20, 2007 at 12:03:08PM -0500, Timur Tabi wrote: > Anton Vorontsov wrote: >> set_irq_chained_handler overwrites MPIC's handle_irq function >> (handle_fasteoi_irq) thus MPIC never gets eoi event from the >> cascaded IRQ. This situation hangs MPIC on MPC8568E. > > I'm not familiar with the differences between IPIC and MPIC. What is this > patch not needed for 83xx?
Yup, this patch not needed for 83xx. IPIC doesn't have end()/eoi(). (..and MPIC doesn't have ack()). Though... Idially QEIC should do both ack() and end(), at the beginning and at the end of irq handling respectively. I don't know (didn't look) why this works for 83xx w/o ack()... maybe IPIC don't need this. Or maybe there is a bug hiding. -- Anton Vorontsov email: [EMAIL PROTECTED] backup email: [EMAIL PROTECTED] irc://irc.freenode.net/bd2 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
