2 files changed, 51 insertions, 0 deletions

diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h
index 0eee7af5143f..e9b903503adb 100644
--- a/include/linux/dma-debug.h
+++ b/include/linux/dma-debug.h
@@ -57,6 +57,17 @@ extern void debug_dma_sync_single_for_device(struct device *dev,
                                              dma_addr_t dma_handle,
                                              size_t size, int direction);
 
+extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
+                                                dma_addr_t dma_handle,
+                                                unsigned long offset,
+                                                size_t size,
+                                                int direction);
+
+extern void debug_dma_sync_single_range_for_device(struct device *dev,
+                                                   dma_addr_t dma_handle,
+                                                   unsigned long offset,
+                                                   size_t size, int direction);
+
 #else /* CONFIG_DMA_API_DEBUG */
 
 static inline void dma_debug_init(u32 num_entries)
@@ -109,6 +120,22 @@ static inline void debug_dma_sync_single_for_device(struct device *dev,
 {
 }
 
+static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
+                                                       dma_addr_t dma_handle,
+                                                       unsigned long offset,
+                                                       size_t size,
+                                                       int direction)
+{
+}
+
+static inline void debug_dma_sync_single_range_for_device(struct device *dev,
+                                                          dma_addr_t dma_handle,
+                                                          unsigned long offset,
+                                                          size_t size,
+                                                          int direction)
+{
+}
+
 #endif /* CONFIG_DMA_API_DEBUG */
 
 #endif /* __DMA_DEBUG_H */
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index 714cfb6ca0e4..d1c0ac1831b7 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -758,3 +758,27 @@ void debug_dma_sync_single_for_device(struct device *dev,
 }
 EXPORT_SYMBOL(debug_dma_sync_single_for_device);
 
+void debug_dma_sync_single_range_for_cpu(struct device *dev,
+                                         dma_addr_t dma_handle,
+                                         unsigned long offset, size_t size,
+                                         int direction)
+{
+        if (unlikely(global_disable))
+                return;
+
+        check_sync(dev, dma_handle, size, offset, direction, true);
+}
+EXPORT_SYMBOL(debug_dma_sync_single_range_for_cpu);
+
+void debug_dma_sync_single_range_for_device(struct device *dev,
+                                            dma_addr_t dma_handle,
+                                            unsigned long offset,
+                                            size_t size, int direction)
+{
+        if (unlikely(global_disable))
+                return;
+
+        check_sync(dev, dma_handle, size, offset, direction, false);
+}
+EXPORT_SYMBOL(debug_dma_sync_single_range_for_device);
+