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powerpc/pmac: Fix DMA ops for MacIO devices

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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>
This commit is contained in:
Benjamin Herrenschmidt 2009-06-18 19:20:51 +00:00
parent 850f6ac316
commit 3514141aed
1 changed files with 11 additions and 0 deletions
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11
drivers/macintosh/macio_asic.c
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@ -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);