[PATCH] ARM: disable interrupt before spinning endlessly

On Mon, Jul 09, 2012 at 05:09:48PM +0800, Shawn Guo wrote:

The CPU will endlessly spin at the end of machine_halt and
machine_restart calls.  However, this will lead to a soft lockup
warning after about 20 seconds, if CONFIG_LOCKUP_DETECTOR is enabled,
as system timer is still alive.

Disable interrupt before going to spin endlessly, so that the lockup
warning will never be seen.

Reported-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <redacted>
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Should this also be Cc'd to stable when it's committed?