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author | Robin Murphy <robin.murphy@arm.com> | 2018-07-24 00:16:12 +0200 |
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committer | Christoph Hellwig <hch@lst.de> | 2018-07-27 19:01:07 +0200 |
commit | 4d8bde883bfba3e8dd3335f91b640e5a70ec0aa6 (patch) | |
tree | ef98a3deb3a6de05ef4ab94e54df266aad331d1a /scripts/documentation-file-ref-check | |
parent | ACPI/IORT: Don't set default coherent DMA mask (diff) | |
download | linux-4d8bde883bfba3e8dd3335f91b640e5a70ec0aa6.tar.xz linux-4d8bde883bfba3e8dd3335f91b640e5a70ec0aa6.zip |
OF: Don't set default coherent DMA mask
Now that we can track upstream DMA constraints properly with
bus_dma_mask instead of trying (and failing) to maintain it in
coherent_dma_mask, it doesn't make much sense for the firmware code to
be touching the latter at all. It's merely papering over bugs wherein a
driver has failed to call dma_set_coherent_mask() *and* the bus code has
not initialised any default value.
We don't really want to encourage more drivers coercing dma_mask so
we'll continue to fix that up if necessary, but add a warning to help
flush out any such buggy bus code that remains.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'scripts/documentation-file-ref-check')
0 files changed, 0 insertions, 0 deletions