[PATCH] PM: wakeirq: fix wake irq warning in system suspend stage

[Greg Kroah-Hartman]

On Wed, Feb 28, 2024 at 10:00:40AM +0800, Qingliang Li wrote:
> When driver registers the wake irq with reverse enable ordering,
> the wake irq will be re-enabled when entering system suspend, triggering
> an 'Unbalanced enable for IRQ xxx' warning. The wake irq will be
> enabled in both dev_pm_enable_wake_irq_complete() and dev_pm_arm_wake_irq()
> 
> To fix this issue, complete the setting of WAKE_IRQ_DEDICATED_ENABLED flag
> in dev_pm_enable_wake_irq_complete() to avoid redundant irq enablement.
> 
> Fixes: 8527beb12087 ("PM: sleep: wakeirq: fix wake irq arming")
> Signed-off-by: Qingliang Li <qingliang.li at mediatek.com>
> ---
>  drivers/base/power/wakeirq.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/base/power/wakeirq.c b/drivers/base/power/wakeirq.c
> index 42171f766dcb..5a5a9e978e85 100644
> --- a/drivers/base/power/wakeirq.c
> +++ b/drivers/base/power/wakeirq.c
> @@ -313,8 +313,10 @@ void dev_pm_enable_wake_irq_complete(struct device *dev)
>  		return;
>  
>  	if (wirq->status & WAKE_IRQ_DEDICATED_MANAGED &&
> -	    wirq->status & WAKE_IRQ_DEDICATED_REVERSE)
> +	    wirq->status & WAKE_IRQ_DEDICATED_REVERSE) {
>  		enable_irq(wirq->irq);
> +		wirq->status |= WAKE_IRQ_DEDICATED_ENABLED;
> +	}
>  }
>  
>  /**
> -- 
> 2.25.1
> 

Hi,

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