OMAP3: PM: Disable interrupt controller AUTOIDLE before WFI

OMAP interrupt controller goes to unknown state when there is right
combination of l3,l4 sleep/wake-up transitions, l4 autoidle in
interrupt controller and some interrupt. When this happens, interrupts
are not delivered to ARM anymore and ARM will remain in WFI (wait for
interrupt) until interrupt controller is forced to wake-up
(i.e. lauterbach).

Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 8a148fbbab43..af83555795ff 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -392,6 +392,7 @@ void omap_sram_idle(void)
                 prm_set_mod_reg_bits(OMAP3430_EN_IO, WKUP_MOD, PM_WKEN);
                 omap3_enable_io_chain();
         }
+        omap3_intc_prepare_idle();
 
         /*
         * On EMU/HS devices ROM code restores a SRDC value
@@ -438,6 +439,7 @@ void omap_sram_idle(void)
                                                OMAP3430_GR_MOD,
                                                OMAP3_PRM_VOLTCTRL_OFFSET);
         }
+        omap3_intc_resume_idle();
 
         /* PER */
         if (per_next_state < PWRDM_POWER_ON) {