Tero Kristo <[email protected]> writes:
> From: Tero Kristo <[email protected]>
>
> Suspending drivers may still generate interrupts just before their suspend is
> completed. Any pending interrupts here will prevent sleep.
>
> Signed-off-by: Tero Kristo <[email protected]>
Thanks, applying to PM branch, queuing for pm-fixes.
Kevin
> ---
> 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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