path: root/drivers/macintosh
diff options
authorChristoph Hellwig <hch@lst.de>2018-02-13 15:44:34 (GMT)
committerChristoph Hellwig <hch@lst.de>2018-02-13 16:58:53 (GMT)
commit7bcfab202ca71bece02b283cdd104301c07eece4 (patch)
treee48c150c35d039c64aff590754c966c68860b04b /drivers/macintosh
parentecc2dc55ce79945c2e0a04977706a99dc4848229 (diff)
powerpc/macio: set a proper dma_coherent_mask
We have expected busses to set up a coherent mask to properly use the common dma mapping code for a long time, and now that I've added a warning macio turned out to not set one up yet. This sets it to the same value as the dma_mask, which seems to be what the drivers expect. Reported-by: Mathieu Malaterre <malat@debian.org> Tested-by: Mathieu Malaterre <malat@debian.org> Reported-by: Meelis Roos <mroos@linux.ee> Tested-by: Meelis Roos <mroos@linux.ee> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/macintosh')
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c
index 62f541f..0707482 100644
--- a/drivers/macintosh/macio_asic.c
+++ b/drivers/macintosh/macio_asic.c
@@ -375,6 +375,7 @@ static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
dev->ofdev.dev.of_node = np;
dev->ofdev.archdata.dma_mask = 0xffffffffUL;
dev->ofdev.dev.dma_mask = &dev->ofdev.archdata.dma_mask;
+ dev->ofdev.dev.coherent_dma_mask = dev->ofdev.archdata.dma_mask;
dev->ofdev.dev.parent = parent;
dev->ofdev.dev.bus = &macio_bus_type;
dev->ofdev.dev.release = macio_release_dev;

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