Commit 5a7b3ff4 authored by Stephen Rothwell's avatar Stephen Rothwell
Browse files

ppc64: allow iSeries to use IRQSTACKS again 



Signed-off-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
parent b709c083

arch/powerpc/platforms/iseries/irq.c

+17 −1
Original line number Diff line number Diff line
@@ -103,6 +103,9 @@ static void intReceived(struct XmPciLpEvent *eventParm, 
		struct pt_regs *regsParm)

{

	int irq;

#ifdef CONFIG_IRQSTACKS

	struct thread_info *curtp, *irqtp;

#endif



	++Pci_Interrupt_Count;
@@ -110,6 +113,19 @@ static void intReceived(struct XmPciLpEvent *eventParm, 
	case XmPciLpEvent_SlotInterrupt:

		irq = eventParm->hvLpEvent.xCorrelationToken;

		/* Dispatch the interrupt handlers for this irq */

#ifdef CONFIG_IRQSTACKS

		/* Switch to the irq stack to handle this */

		curtp = current_thread_info();

		irqtp = hardirq_ctx[smp_processor_id()];

		if (curtp != irqtp) {

			irqtp->task = curtp->task;

			irqtp->flags = 0;

			call_ppc_irq_dispatch_handler(regsParm, irq, irqtp);

			irqtp->task = NULL;

			if (irqtp->flags)

				set_bits(irqtp->flags, &curtp->flags);

		} else

#endif

			ppc_irq_dispatch_handler(regsParm, irq);

		HvCallPci_eoi(eventParm->eventData.slotInterrupt.busNumber,

			eventParm->eventData.slotInterrupt.subBusNumber,