Quoting Nicholas Mc Guire (2018-11-21 04:28:30)
> The kmalloc here is small (< 16 bytes) and occurs during initialization
> during system startup here (can not be built as module) thus if this
> kmalloc failed it is an indication of something more serious going on
> and it is fine to hang the system here rather than cause some harder
> to understand error by dereferencing NULL.
> 
> Explicitly checking would not make that much sense here as the only
> possible reaction would be would BUG() here anyway.
> 
> Signed-off-by: Nicholas Mc Guire <hof...@osadl.org>
> Fixes: 0ee52b157b8e ("clk: zynq: Add clock controller driver")
> Acked-by: Michal Simek <michal.si...@xilinx.com>
> ---

Nak. We don't have any __GFP_NOFAIL in drivers/clk and I don't see a
reason why we would want it here either. Just handle the failure, or
don't care if this is so critical to system boot.

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