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Date:   Thu, 2 Jun 2022 05:19:12 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     Arnd Bergmann <arnd@arndb.de>
Cc:     Linus Torvalds <torvalds@linux-foundation.org>,
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Subject: Re: mainline build failure due to f1e4c916f97f ("drm/edid: add EDID
 block count and size helpers")
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On Thu, Jun 02, 2022 at 09:38:56AM +0200, Arnd Bergmann wrote:
> - dma_addr_t/phys_addr_t are sometimes put into hardware data
>   structures in coherent DMA allocations.

Putting a dma_addr_t into a hardware data structure is broken.
dma_addr_t is the in-memory type, for the hardare it should always
be a __le/__be type of the actual width that the particular piece
of hardware uses.