1 files changed, 11 insertions, 7 deletions

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index ac07ff090919..2e551e2d2d03 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -1,6 +1,7 @@
 #ifndef _LINUX_DMA_MAPPING_H
 #define _LINUX_DMA_MAPPING_H
 
+#include <linux/sizes.h>
 #include <linux/string.h>
 #include <linux/device.h>
 #include <linux/err.h>
@@ -145,7 +146,9 @@ static inline void arch_teardown_dma_ops(struct device *dev) { }
 
 static inline unsigned int dma_get_max_seg_size(struct device *dev)
 {
-        return dev->dma_parms ? dev->dma_parms->max_segment_size : 65536;
+        if (dev->dma_parms && dev->dma_parms->max_segment_size)
+                return dev->dma_parms->max_segment_size;
+        return SZ_64K;
 }
 
 static inline unsigned int dma_set_max_seg_size(struct device *dev,
@@ -154,14 +157,15 @@ static inline unsigned int dma_set_max_seg_size(struct device *dev,
         if (dev->dma_parms) {
                 dev->dma_parms->max_segment_size = size;
                 return 0;
-        } else
-                return -EIO;
+        }
+        return -EIO;
 }
 
 static inline unsigned long dma_get_seg_boundary(struct device *dev)
 {
-        return dev->dma_parms ?
-                dev->dma_parms->segment_boundary_mask : 0xffffffff;
+        if (dev->dma_parms && dev->dma_parms->segment_boundary_mask)
+                return dev->dma_parms->segment_boundary_mask;
+        return DMA_BIT_MASK(32);
 }
 
 static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask)
@@ -169,8 +173,8 @@ static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask)
         if (dev->dma_parms) {
                 dev->dma_parms->segment_boundary_mask = mask;
                 return 0;
-        } else
-                return -EIO;
+        }
+        return -EIO;
 }
 
 #ifndef dma_max_pfn