#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/of.h>
+#include <linux/of_address.h>
#include <linux/property.h>
/**
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);