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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2007-08-06 18:05:10 -0400
committerPaul Mackerras <paulus@samba.org>2007-08-10 07:04:42 -0400
commit8f2ea1fd3f97ab7a809e939b5b9005a16f862439 (patch)
tree032d1fff16d11eac353a1174febd70bbdbf2c991 /include/asm-powerpc/dma-mapping.h
parent939e60f6808a9ffd3a4e5f145057379c138c89aa (diff)
[POWERPC] Fix initialization and usage of dma_mask
powerpc has a couple of bugs in the usage of dma_masks that tend to break when drivers explicitly try to set a 32-bit mask for example. First, the code that generates the pci devices from the OF device-tree doesn't initialize the mask properly, then our implementation of set_dma_mask() was trying to validate the -previous- mask value, not the one passed in as an argument. This fixes these problems. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/dma-mapping.h')
-rw-r--r--include/asm-powerpc/dma-mapping.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-powerpc/dma-mapping.h b/include/asm-powerpc/dma-mapping.h
index f6bd804d9090..744d6bb24116 100644
--- a/include/asm-powerpc/dma-mapping.h
+++ b/include/asm-powerpc/dma-mapping.h
@@ -95,7 +95,7 @@ static inline int dma_set_mask(struct device *dev, u64 dma_mask)
95 return -EIO; 95 return -EIO;
96 if (dma_ops->set_dma_mask != NULL) 96 if (dma_ops->set_dma_mask != NULL)
97 return dma_ops->set_dma_mask(dev, dma_mask); 97 return dma_ops->set_dma_mask(dev, dma_mask);
98 if (!dev->dma_mask || !dma_supported(dev, *dev->dma_mask)) 98 if (!dev->dma_mask || !dma_supported(dev, dma_mask))
99 return -EIO; 99 return -EIO;
100 *dev->dma_mask = dma_mask; 100 *dev->dma_mask = dma_mask;
101 return 0; 101 return 0;