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Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/device.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/of/device.c b/drivers/of/device.c
index e1ae9e7104a1..8bd3d8c09435 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -82,7 +82,7 @@ int of_device_add(struct platform_device *ofdev)
* can use a platform bus notifier and handle BUS_NOTIFY_ADD_DEVICE events
* to fix up DMA configuration.
*/
-void of_dma_configure(struct device *dev, struct device_node *np)
+int of_dma_configure(struct device *dev, struct device_node *np)
{
u64 dma_addr, paddr, size;
int ret;
@@ -123,7 +123,7 @@ void of_dma_configure(struct device *dev, struct device_node *np)
if (!size) {
dev_err(dev, "Adjusted size 0x%llx invalid\n", size);
- return;
+ return -EINVAL;
}
dev_dbg(dev, "dma_pfn_offset(%#08lx)\n", offset);
}
@@ -144,10 +144,15 @@ void of_dma_configure(struct device *dev, struct device_node *np)
coherent ? " " : " not ");
iommu = of_iommu_configure(dev, np);
+ if (IS_ERR(iommu))
+ return PTR_ERR(iommu);
+
dev_dbg(dev, "device is%sbehind an iommu\n",
iommu ? " " : " not ");
arch_setup_dma_ops(dev, dma_addr, size, iommu, coherent);
+
+ return 0;
}
EXPORT_SYMBOL_GPL(of_dma_configure);