From: Tero Kristo <tero.kristo@xxxxxxxxx>
Suspending drivers may still generate interrupts just before their suspend is
completed. Any pending interrupts here will prevent sleep.
Signed-off-by: Tero Kristo <tero.kristo@xxxxxxxxx>
---
arch/arm/mach-omap2/irq.c | 6 ++++++
arch/arm/mach-omap2/pm34xx.c | 2 +-
arch/arm/plat-omap/include/mach/irqs.h | 1 +
3 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
index aceedd8..ee8c68a 100644
--- a/arch/arm/mach-omap2/irq.c
+++ b/arch/arm/mach-omap2/irq.c
@@ -266,4 +266,10 @@ void omap3_intc_restore_context(void)
}
/* MIRs are saved and restore with other PRCM registers */
}
+
+void omap3_intc_suspend(void)
+{
+ /* A pending interrupt would prevent OMAP from entering suspend */
+ omap_ack_irq(0);
+}
#endif /* CONFIG_ARCH_OMAP3 */
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 6782792..53544d3 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -640,7 +640,7 @@ static int omap3_pm_suspend(void)
}
omap_uart_prepare_suspend();
-
+ omap3_intc_suspend();
regset_save_on_suspend = 1;
omap_sram_idle();
regset_save_on_suspend = 0;
diff --git a/arch/arm/plat-omap/include/mach/irqs.h b/arch/arm/plat-omap/include/mach/irqs.h
index 2473910..ff1faa8 100644
--- a/arch/arm/plat-omap/include/mach/irqs.h
+++ b/arch/arm/plat-omap/include/mach/irqs.h
@@ -485,6 +485,7 @@ extern void omap_init_irq(void);
extern int omap_irq_pending(void);
void omap3_intc_save_context(void);
void omap3_intc_restore_context(void);
+void omap3_intc_suspend(void);
#endif
#include <mach/hardware.h>
--
1.5.4.3
--
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