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path: root/drivers/of/device.c
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Diffstat (limited to 'drivers/of/device.c')
-rw-r--r--drivers/of/device.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/of/device.c b/drivers/of/device.c
index da8158392010..e9127db7b067 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -93,7 +93,7 @@ int of_dma_configure(struct device *dev, struct device_node *np, bool force_dma)
bool coherent;
unsigned long offset;
const struct iommu_ops *iommu;
- u64 mask;
+ u64 mask, end;
ret = of_dma_get_range(np, &dma_addr, &paddr, &size);
if (ret < 0) {
@@ -148,12 +148,13 @@ int of_dma_configure(struct device *dev, struct device_node *np, bool force_dma)
* Limit coherent and dma mask based on size and default mask
* set by the driver.
*/
- mask = DMA_BIT_MASK(ilog2(dma_addr + size - 1) + 1);
+ end = dma_addr + size - 1;
+ mask = DMA_BIT_MASK(ilog2(end) + 1);
dev->coherent_dma_mask &= mask;
*dev->dma_mask &= mask;
- /* ...but only set bus mask if we found valid dma-ranges earlier */
+ /* ...but only set bus limit if we found valid dma-ranges earlier */
if (!ret)
- dev->bus_dma_mask = mask;
+ dev->bus_dma_limit = end;
coherent = of_dma_is_coherent(np);
dev_dbg(dev, "device is%sdma coherent\n",