---

yaml --- r: 187291 b: refs/heads/master c: 6a1961f h: refs/heads/master i: 187289: 53541ac 187287: 0079f94 v: v3
git-mirror · Mar 12, 2010 · 09d67b5 · 09d67b5
1 parent 8062df6
commit 09d67b5
Show file tree

Hide file tree

Showing 4 changed files with 22 additions and 5 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e3c4bccabaf3e5c13f4b307c7737cbe8d0cecd02
+refs/heads/master: 6a1961f49ee8d7339ea2454443dfc0460e0b2748
diff --git a/trunk/Documentation/DMA-API.txt b/trunk/Documentation/DMA-API.txt
@@ -167,6 +167,16 @@ parameters if it is.
 
 Returns: 0 if successful and a negative error if not.
 
+int
+dma_set_coherent_mask(struct device *dev, u64 mask)
+int
+pci_set_consistent_dma_mask(struct pci_device *dev, u64 mask)
+
+Checks to see if the mask is possible and updates the device
+parameters if it is.
+
+Returns: 0 if successful and a negative error if not.
+
 u64
 dma_get_required_mask(struct device *dev)
 

diff --git a/trunk/drivers/pci/pci.c b/trunk/drivers/pci/pci.c
@@ -2315,12 +2315,11 @@ pci_set_dma_mask(struct pci_dev *dev, u64 mask)
 int
 pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
 {
-	if (!pci_dma_supported(dev, mask))
-		return -EIO;
+	int ret = dma_set_coherent_mask(&dev->dev, mask);
+	if (ret)
+		return ret;
 
-	dev->dev.coherent_dma_mask = mask;
 	dev_dbg(&dev->dev, "using %dbit consistent DMA mask\n", fls64(mask));
-
 	return 0;
 }
 #endif

diff --git a/trunk/include/linux/dma-mapping.h b/trunk/include/linux/dma-mapping.h
@@ -127,6 +127,14 @@ static inline u64 dma_get_mask(struct device *dev)
 	return DMA_BIT_MASK(32);
 }
 
+static inline int dma_set_coherent_mask(struct device *dev, u64 mask)
+{
+	if (!dma_supported(dev, mask))
+		return -EIO;
+	dev->coherent_dma_mask = mask;
+	return 0;
+}
+
 extern u64 dma_get_required_mask(struct device *dev);
 
 static inline unsigned int dma_get_max_seg_size(struct device *dev)