powerpc defines various machine-specific routines for handling
pci_set_dma_mask(). The routines for machine "PowerNV" may neglect
to set dev->dma_mask. This could confuse anyone (e.g. drivers) that
consult dev->dma_mask to find the current mask. Set the dma_mask in
the PowerNV leaf routine.
Signed-off-by: Brian W. Hart <ha...@linux.vnet.ibm.com>
---
I assume the failure to set dma_mask in this path was just an oversight.
With this change everything still seems to work fine on my powernv setup,
and dev->dma_mask now carries the appropriate value after
pci_set_dma_mask(dev, DMA_BIT_MASK(64).
arch/powerpc/platforms/powernv/pci-ioda.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c
b/arch/powerpc/platforms/powernv/pci-ioda.c
index de19ede..3136ae2 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -491,6 +491,7 @@ static int pnv_pci_ioda_dma_set_mask(struct pnv_phb *phb,
set_dma_ops(&pdev->dev, &dma_iommu_ops);
set_iommu_table_base(&pdev->dev, &pe->tce32_table);
}
+ *pdev->dev.dma_mask = dma_mask;
return 0;
}
--
1.7.1
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