[PATCH 8/11] OMAP2: ack PIC after marking pending IRQs

["Imre Deak" <imre.deak%gmail.com@localhost>]

OMAP2: ack PIC after marking pending IRQs

 This is needed, so that the PIC doesn't assert the IRQ line for
 IRQs that we have already marked as pending.
 ---
  sys/arch/arm/omap/omap2_icu.c |   11 +++++++++++
  1 files changed, 11 insertions(+), 0 deletions(-)

 diff --git a/sys/arch/arm/omap/omap2_icu.c b/sys/arch/arm/omap/omap2_icu.c
 index 1d790c5..1f35955 100644
 --- a/sys/arch/arm/omap/omap2_icu.c
 +++ b/sys/arch/arm/omap/omap2_icu.c
 @@ -118,6 +118,15 @@ omap2icu_block_irqs(struct pic_softc *pic, size_t
 irqbase, uint32_t irq_mask)
        sc->sc_enabled_irqs[group] &= ~irq_mask;
  }

 +static void
 +omap2icu_ack_pic(struct pic_softc *pic)
 +{
 +       struct omap2icu_softc * const sc = PICTOSOFTC(pic);
 +
 +       /* Force INTC to recompute IRQ availability */
 +       INTC_WRITE(sc, 0, INTC_CONTROL, INTC_CONTROL_NEWIRQAGR);
 +}
 +
  /*
  * Called with interrupts disabled
  */
 @@ -154,6 +163,8 @@ omap_irq_handler(void *frame)
        if (sc->sc_enabled_irqs[2])
                ipl_mask |= find_pending_irqs(sc, 2);

 +       omap2icu_ack_pic(&sc->sc_pic);
 +
        /*
         * Record the pending_ipls and deliver them if we can.
         */
 --
 1.5.4.2