Re: [PATCH] rtc: at91rm9200: double locking bug in at91_rtc_interrupt()

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On Tuesday, March 17, 2015 04:38:10 PM Nicolas Ferre wrote:
> From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> 
> There is a typo here so we deadlock.
> 
> Fixes: dd1f1f391dd7 ('rtc: at91rm9200: rework wakeup and interrupt handling')
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> Acked-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
> Reported-also-by: David Dueck <davidcdueck@xxxxxxxxxxxxxx>
> Signed-off-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
> ---
> Hi Andrew,
> 
> Can you please take care of this fix for 4.0?
> If you fee that I'd better take it myself please tell me.

The commit being fixed went in through my tree, so I'll take this one if that's
not a problem.

>  drivers/rtc/rtc-at91rm9200.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c
> index b4f7744f6751..b283a1a573b3 100644
> --- a/drivers/rtc/rtc-at91rm9200.c
> +++ b/drivers/rtc/rtc-at91rm9200.c
> @@ -324,7 +324,7 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id)
>  
>  		ret = IRQ_HANDLED;
>  	}
> -	spin_lock(&suspended_lock);
> +	spin_unlock(&suspended_lock);
>  
>  	return ret;
>  }
> 

-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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