Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 33d9ff59 authored by steve@digidescorp.com's avatar steve@digidescorp.com Committed by Michal Simek
Browse files

microblaze: Fix level interrupt ACKing 



Level interrupts need to be ack'd in the unmask handler, as in powerpc.
Among other issues, this bug causes the system clock to appear to run at
double-speed.

Signed-off-by: default avatarSteven J. Magnani <steve@digidescorp.com>
Signed-off-by: default avatarMichal Simek <monstr@monstr.eu>
parent 833d0d8d

arch/microblaze/kernel/intc.c

+9 −1
Original line number Diff line number Diff line
@@ -42,8 +42,16 @@ unsigned int nr_irq; 


static void intc_enable_or_unmask(unsigned int irq)

{

	unsigned long mask = 1 << irq;

	pr_debug("enable_or_unmask: %d\n", irq);

	out_be32(INTC_BASE + SIE, 1 << irq);

	out_be32(INTC_BASE + SIE, mask);



	/* ack level irqs because they can't be acked during

	 * ack function since the handle_level_irq function

	 * acks the irq before calling the interrupt handler

	 */

	if (irq_desc[irq].status & IRQ_LEVEL)

		out_be32(INTC_BASE + IAR, mask);

}



static void intc_disable_or_mask(unsigned int irq)