linux-kernel - Re: [PATCH 2/2] arch/powerpc/platforms/85xx: Add local_irq

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Date:	Tue, 30 Dec 2008 12:11:51 -0600
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Julia Lawall <julia@...u.dk>
Cc:	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 2/2] arch/powerpc/platforms/85xx: Add local_irq_restore in error handling code


On Dec 21, 2008, at 2:54 PM, Julia Lawall wrote:

> From: Julia Lawall <julia@...u.dk>
>
> There is a call to local_irq_restore in the normal exit case, so it  
> would
> seem that there should be one on an error return as well.
>
> The semantic patch that makes this change is as follows:
> (http://www.emn.fr/x-info/coccinelle/)
>
> // <smpl>
> @@
> expression l;
> expression E,E1,E2;
> @@
>
> local_irq_save(l);
> ... when != local_irq_restore(l)
>    when != spin_unlock_irqrestore(E,l)
>    when any
>    when strict
> (
> if (...) { ... when != local_irq_restore(l)
>               when != spin_unlock_irqrestore(E1,l)
> +   local_irq_restore(l);
>    return ...;
> }
> |
> if (...)
> +   {local_irq_restore(l);
>    return ...;
> +   }
> |
> spin_unlock_irqrestore(E2,l);
> |
> local_irq_restore(l);
> )
> // </smpl>
>
> Signed-off-by: Julia Lawall <julia@...u.dk>
>
> ---
> arch/powerpc/platforms/85xx/smp.c |    1 +
> 1 file changed, 1 insertion(+)

applied.

- k
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