Re: [PATCH] sh: mm: Fix unprotected access to struct device

[Christoph Hellwig]

On Wed, Apr 18, 2018 at 03:13:14PM +0200, jacopo mondi wrote:
> As long as it goes for arch/sh, the only user of dma_alloc_coherent()
> is platform_resource_setup_memory(), and it has been fixed by this
> patch.

Great!

> 
> Unfortunately, as Thomas pointed out, there are drivers which calls
> into this with the wrong 'struct device' as the sh_eth one he had fixed.

Yes, we'll need fixes there.  Other DMA ops implementations also look
at struct device, so they generally are buggy.

> I would then say that as long as it goes for the NULL case, we should be
> fine now.

Then I'd say skil that part, please.