1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/base/property.c b/drivers/base/property.c
index 1d0b116cae95..e645852396ba 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -14,6 +14,7 @@
 #include <linux/export.h>
 #include <linux/kernel.h>
 #include <linux/of.h>
+#include <linux/of_address.h>
 #include <linux/property.h>
 
 /**
@@ -519,3 +520,16 @@ unsigned int device_get_child_node_count(struct device *dev)
         return count;
 }
 EXPORT_SYMBOL_GPL(device_get_child_node_count);
+
+bool device_dma_is_coherent(struct device *dev)
+{
+        bool coherent = false;
+
+        if (IS_ENABLED(CONFIG_OF) && dev->of_node)
+                coherent = of_dma_is_coherent(dev->of_node);
+        else
+                acpi_check_dma(ACPI_COMPANION(dev), &coherent);
+
+        return coherent;
+}
+EXPORT_SYMBOL_GPL(device_dma_is_coherent);