On Wed, 20 Jun 2018, Christoph Hellwig wrote:
> When this was posted for the last merge window Finn Thain reported this
> works, but requires further dma mask fixes in m68 driver.
>
The dma mask fix was actually needed because of the WARN_ON that appeared
in v4.16, due to commit 205e1b7f51e4 ("dma-mapping: warn when there is no
coherent_dma_mask").
The dma mask fix is commit b12c8a70643f ("m68k: Set default dma mask for
platform devices").
The generic dma code failed catastrophically without the mask fix, but you
resolved that with commit 2550bbfd4952 ("dma-direct: don't crash on device
without dma_mask").
The generic dma code threw up a warning with CONFIG_DMA_API_DEBUG=y that
was fixed in commit 26de0b76d9ba ("net/sonic: Use dma_mapping_error()").
> It would be great if this patch could be queued up for 4.19 together
> with said fixes.
>
Looks like all of the above-mentioned commits are in mainline so there
should be no problem queueing this up (as far as Mac/68k drivers are
concerned).
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