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From: Willy Tarreau on 7 Jul 2010 00:20
On Wed, Jul 07, 2010 at 04:52:16AM +0200, Peter Huewe wrote:
> From: Peter Huewe <peterhuewe(a)gmx.de>
>
> This patch prevents the code from calling parport_release and
> parport_unregister_device twice with the same arguments - and thus fixes an oops.
>
> Rationale:
> After the first call the parport is already released and the
> handle isn't valid anymore and calling parport_release and
> parport_unregister_device twice isn't a good idea.
>
> Signed-off-by: Peter Huewe <peterhuewe(a)gmx.de>
> ---
> KernelVersion: linux-next-20100607
>
> drivers/staging/panel/panel.c | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/staging/panel/panel.c b/drivers/staging/panel/panel.c
> index 3154ffe..6fa57be 100644
> --- a/drivers/staging/panel/panel.c
> +++ b/drivers/staging/panel/panel.c
> @@ -2277,6 +2277,7 @@ int panel_init(void)
> if (pprt) {
> parport_release(pprt);
> parport_unregister_device(pprt);
> + pprt = NULL;
> }
> parport_unregister_driver(&panel_driver);
> printk(KERN_ERR "Panel driver version " PANEL_VERSION
> @@ -2327,6 +2328,7 @@ static void __exit panel_cleanup_module(void)
> /* TODO: free all input signals */
> parport_release(pprt);
> parport_unregister_device(pprt);
> + pprt = NULL;
> }
> parport_unregister_driver(&panel_driver);
> }
> --
> 1.7.1

look fine, ACK by me !

Willy

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