MIPS: Octeon: Mark SMP-IPI interrupt as IRQF_NO_THREAD

This is to exclude it from force threading to allow RT patch set to work.
And while on this line
* Remove IRQF_DISABLED as as this flag is NOOP
* Add IRQF_PERCPU as this is a per cpu interrupt.

Signed-off-by: Venkat Subbiah <venkat.subbiah@cavium.com>
Acked-by: David Daney <david.daney@cavium.com>
To: linux-mips@linux-mips.org
To: linux-rt-users@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2817/
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/cavium-octeon/smp.c b/arch/mips/cavium-octeon/smp.c
index 8b606423bbd7f84dcacd4b043297844fc59200d4..efcfff4d4627c55f4238bfd3361fe937be25465e 100644 (file)
--- a/arch/mips/cavium-octeon/smp.c
+++ b/arch/mips/cavium-octeon/smp.c
@@ -207,8 +207,9 @@ void octeon_prepare_cpus(unsigned int max_cpus)
         * the other bits alone.
         */
        cvmx_write_csr(CVMX_CIU_MBOX_CLRX(cvmx_get_core_num()), 0xffff);
-       if (request_irq(OCTEON_IRQ_MBOX0, mailbox_interrupt, IRQF_DISABLED,
-                       "SMP-IPI", mailbox_interrupt)) {
+       if (request_irq(OCTEON_IRQ_MBOX0, mailbox_interrupt,
+                       IRQF_PERCPU | IRQF_NO_THREAD, "SMP-IPI",
+                       mailbox_interrupt)) {
                panic("Cannot request_irq(OCTEON_IRQ_MBOX0)\n");
        }
 }