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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-06-18 19:20:51 (GMT)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-06-26 04:37:25 (GMT)
commit3514141aedc16c7344117d5bd79ec1310edf8fb3 (patch)
treecb5ec643b9e201f353fd764d22b9942324f85fd1 /drivers/macintosh/macio_asic.c
parent850f6ac316cf84bba63fdb775c897834eccbfaa3 (diff)
downloadlinux-3514141aedc16c7344117d5bd79ec1310edf8fb3.tar.xz
powerpc/pmac: Fix DMA ops for MacIO devices
The macio_dev's created to map devices inside the MacIO ASICs don't have proper dma_ops. This causes crashes on some machines since the SCSI code calls dma_map_* on our behalf using the device we hang from. This fixes it by copying the parent PCI device dma_ops into the macio_dev when creating it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/macintosh/macio_asic.c')
-rw-r--r--drivers/macintosh/macio_asic.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c
index 6e149f4..a0f6838 100644
--- a/drivers/macintosh/macio_asic.c
+++ b/drivers/macintosh/macio_asic.c
@@ -378,6 +378,17 @@ static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
dev->ofdev.dev.bus = &macio_bus_type;
dev->ofdev.dev.release = macio_release_dev;
+#ifdef CONFIG_PCI
+ /* Set the DMA ops to the ones from the PCI device, this could be
+ * fishy if we didn't know that on PowerMac it's always direct ops
+ * or iommu ops that will work fine
+ */
+ dev->ofdev.dev.archdata.dma_ops =
+ chip->lbus.pdev->dev.archdata.dma_ops;
+ dev->ofdev.dev.archdata.dma_data =
+ chip->lbus.pdev->dev.archdata.dma_data;
+#endif /* CONFIG_PCI */
+
#ifdef DEBUG
printk("preparing mdev @%p, ofdev @%p, dev @%p, kobj @%p\n",
dev, &dev->ofdev, &dev->ofdev.dev, &dev->ofdev.dev.kobj);