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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>
This commit is contained in:
Tero Kristo 2009-10-23 19:03:48 +03:00 committed by Kevin Hilman
parent 7284ce6c9f
commit 2bbe3af3f1
3 changed files with 9 additions and 0 deletions
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6
arch/arm/mach-omap2/irq.c
View File

@ -274,4 +274,10 @@ void omap_intc_restore_context(void)
} }
/* MIRs are saved and restore with other PRCM registers */ /* 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 */ #endif /* CONFIG_ARCH_OMAP3 */

2
arch/arm/mach-omap2/pm34xx.c
View File

@ -578,6 +578,8 @@ static int omap3_pm_suspend(void)
} }
omap_uart_prepare_suspend(); omap_uart_prepare_suspend();
omap3_intc_suspend();
omap_sram_idle(); omap_sram_idle();
restore: restore:

1
arch/arm/plat-omap/include/plat/irqs.h
View File

@ -499,6 +499,7 @@ extern void omap_init_irq(void);
extern int omap_irq_pending(void); extern int omap_irq_pending(void);
void omap_intc_save_context(void); void omap_intc_save_context(void);
void omap_intc_restore_context(void); void omap_intc_restore_context(void);
void omap3_intc_suspend(void);
#endif #endif
#include <mach/hardware.h> #include <mach/hardware.h>