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Diffstat (limited to 'arch/x86/kernel/pci-dma.c')
-rw-r--r--arch/x86/kernel/pci-dma.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
new file mode 100644
index 00000000000..f1c24d8e794
--- /dev/null
+++ b/arch/x86/kernel/pci-dma.c
@@ -0,0 +1,14 @@
+#include <linux/dma-mapping.h>
+
+int dma_set_mask(struct device *dev, u64 mask)
+{
+ if (!dev->dma_mask || !dma_supported(dev, mask))
+ return -EIO;
+
+ *dev->dma_mask = mask;
+
+ return 0;
+}
+EXPORT_SYMBOL(dma_set_mask);
+
+