From 7bcfab202ca71bece02b283cdd104301c07eece4 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig <hch@lst.de> Date: Tue, 13 Feb 2018 07:44:34 -0800 Subject: [PATCH] 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> --- drivers/macintosh/macio_asic.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c index 62f541f968f6..07074820a167 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;