Bug#651215: Kernel fails to boot on NSLU2

[Nicolas Pitre]

On Wed, 7 Dec 2011, Russell King - ARM Linux wrote:

> On Wed, Dec 07, 2011 at 11:05:58PM +0100, Arnaud Patard wrote:
> > I may be wrong but it seems that arm_dma_zone_size is used before being
> > set. It would be interesting if someone can boot test a nslu2 kernel with
> > appended patch.
> 
> It does look like that's the case - arm_dma_zone_size is used in
> arm_bootmem_free(), which is called from bootmem_init() and in turn
> paging_init().
> 
> So, arm_dma_zone_size needs to be set before paging_init() is called.

Oops, indeed.

> I'd actually suggest moving it before:
> 
>         if (mdesc->restart_mode)
>                 reboot_setup(&mdesc->restart_mode);
> 
> so that it's set real early, to avoid any future problems with this.
> The earlier these kinds of things are set, the less likely this kind
> of bug will happen.

Arnaud: please resubmit your patch moving the call as suggested by 
Russell and mark it with:

Acked-by: Nicolas Pitre <nico at linaro.org>

and

CC: stable at kernel.org

Thanks


Nicolas