[PATCH] of: dma: protect list write operation by spin_lock

[Rob Herring]

On 01/28/2013 09:24 AM, Andy Shevchenko wrote:
> Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
> ---
>  drivers/of/dma.c |    2 ++
>  1 file changed, 2 insertions(+)

You need to cc whomever has this file in their tree which is Vinod.

Acked-by: Rob Herring <rob.herring at calxeda.com>

Vinod, it's probably better to move drivers/of/dma.c to drivers/dma.
That's been the direction we've been taking with new OF binding code. I
must have missed that in the review.

Rob

> 
> diff --git a/drivers/of/dma.c b/drivers/of/dma.c
> index 59631b2..1ae6120 100644
> --- a/drivers/of/dma.c
> +++ b/drivers/of/dma.c
> @@ -117,7 +117,9 @@ int of_dma_controller_register(struct device_node *np,
>  	ofdma->use_count = 0;
>  
>  	/* Now queue of_dma controller structure in list */
> +	spin_lock(&of_dma_lock);
>  	list_add_tail(&ofdma->of_dma_controllers, &of_dma_list);
> +	spin_unlock(&of_dma_lock);
>  
>  	return 0;
>  }
>