[PATCH] clk: Check parent for NULL in clk_change_rate

[Mike Turquette]

On 20120608-14:04, Pawel Moll wrote:
> clk_change_rate() is accessing parent's rate without checking
> if the parent exists at all. In case of root clocks this will
> cause NULL pointer dereference.
> 
> This patch follows what clk_calc_new_rates() does in such
> situation.
> 
> Signed-off-by: Pawel Moll <pawel.moll at arm.com>

Pawel,

This problem is indeed a real one.  I've taken your patch into clk-next
for testing.

Thanks much,
Mike