linux-kernel - Re: pata-macio WARNING at dmam_alloc

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Message-ID: <20180213145120.GA14657@lst.de>
Date:   Tue, 13 Feb 2018 15:51:20 +0100
From:   Christoph Hellwig <hch@....de>
To:     Meelis Roos <mroos@...ux.ee>
Cc:     Christoph Hellwig <hch@....de>, linuxppc-dev@...ts.ozlabs.org,
        iommu@...ts.linux-foundation.org,
        Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: pata-macio WARNING at dmam_alloc_coherent+0xec/0x110

Does this fix your warning?

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;