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authorTero Kristo <tero.kristo@nokia.com>2009-10-23 19:03:48 +0300
committerKevin Hilman <khilman@deeprootsystems.com>2010-01-20 18:15:58 -0800
commit2bbe3af3f1e1c1d0992c984e05d061ef5469edb4 (patch)
treedf2f0e2ef2561930d277d0923dd15012046646ff
parent7284ce6c9f6153d1777df5f310c959724d1bd446 (diff)
OMAP3: PM: Ack pending interrupts before entering suspend
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@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
-rw-r--r--arch/arm/mach-omap2/irq.c6
-rw-r--r--arch/arm/mach-omap2/pm34xx.c2
-rw-r--r--arch/arm/plat-omap/include/plat/irqs.h1
3 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
index e9bc782fa41..54c5f0dcd66 100644
--- a/arch/arm/mach-omap2/irq.c
+++ b/arch/arm/mach-omap2/irq.c
@@ -274,4 +274,10 @@ void omap_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 c6cc809afb7..b26418d5507 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -578,6 +578,8 @@ static int omap3_pm_suspend(void)
}
omap_uart_prepare_suspend();
+ omap3_intc_suspend();
+
omap_sram_idle();
restore:
diff --git a/arch/arm/plat-omap/include/plat/irqs.h b/arch/arm/plat-omap/include/plat/irqs.h
index 97d6c50c3dc..0082036f6a4 100644
--- a/arch/arm/plat-omap/include/plat/irqs.h
+++ b/arch/arm/plat-omap/include/plat/irqs.h
@@ -499,6 +499,7 @@ extern void omap_init_irq(void);
extern int omap_irq_pending(void);
void omap_intc_save_context(void);
void omap_intc_restore_context(void);
+void omap3_intc_suspend(void);
#endif
#include <mach/hardware.h>