RE: [PATCH 2/3] swiotlb: create __alloc_bootmem_low_nopanic and add support in SWIOTLB

> I "fixed" it with the hack below.  Please let me know if this is not
> palatable for you.

Not really.  The only use of platform_dma_init() that I can see is in
arch/ia64/mm/init.c:mem_init() ...

	platform_dma_init();

so "void" looks to be the right return value.  Why did it get changed to
be "int" (here's where I admit that I've only looked superficially at your
patch).

-Tony
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