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author | Robin Murphy <robin.murphy@arm.com> | 2018-07-24 01:16:11 +0300 |
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committer | Christoph Hellwig <hch@lst.de> | 2018-07-27 20:01:06 +0300 |
commit | 6757cdae44449dec2af68cd4db0a5f9a30e66b38 (patch) | |
tree | 261295beb90a0c9994e253dfbe46007a6c08974f /drivers/of/device.c | |
parent | 03bfdc31176cbe21e456f889ccbbf67568831149 (diff) | |
download | linux-6757cdae44449dec2af68cd4db0a5f9a30e66b38.tar.xz |
ACPI/IORT: 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>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/of/device.c')
0 files changed, 0 insertions, 0 deletions