dma-mapping: mark DMA_nBITS_MASK as deprecated

Mark them deprecated so that out-of-tree developers get notified about
this before their modules break when these macros are removed.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Yang Hongyang <yanghy@cn.fujitsu.com>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/dma-mapping.h

@@ -63,24 +63,26 @@ struct dma_map_ops {
 
 #define DMA_BIT_MASK(n)	(((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
 
+typedef u64 DMA_nnBIT_MASK __deprecated;
+
 /*
  * NOTE: do not use the below macros in new code and do not add new definitions
  * here.
  *
  * Instead, just open-code DMA_BIT_MASK(n) within your driver
  */
-#define DMA_64BIT_MASK	DMA_BIT_MASK(64)
-#define DMA_48BIT_MASK	DMA_BIT_MASK(48)
-#define DMA_47BIT_MASK	DMA_BIT_MASK(47)
-#define DMA_40BIT_MASK	DMA_BIT_MASK(40)
-#define DMA_39BIT_MASK	DMA_BIT_MASK(39)
-#define DMA_35BIT_MASK	DMA_BIT_MASK(35)
-#define DMA_32BIT_MASK	DMA_BIT_MASK(32)
-#define DMA_31BIT_MASK	DMA_BIT_MASK(31)
-#define DMA_30BIT_MASK	DMA_BIT_MASK(30)
-#define DMA_29BIT_MASK	DMA_BIT_MASK(29)
-#define DMA_28BIT_MASK	DMA_BIT_MASK(28)
-#define DMA_24BIT_MASK	DMA_BIT_MASK(24)
+#define DMA_64BIT_MASK	(DMA_nnBIT_MASK)DMA_BIT_MASK(64)
+#define DMA_48BIT_MASK	(DMA_nnBIT_MASK)DMA_BIT_MASK(48)
+#define DMA_47BIT_MASK	(DMA_nnBIT_MASK)DMA_BIT_MASK(47)
+#define DMA_40BIT_MASK	(DMA_nnBIT_MASK)DMA_BIT_MASK(40)
+#define DMA_39BIT_MASK	(DMA_nnBIT_MASK)DMA_BIT_MASK(39)
+#define DMA_35BIT_MASK	(DMA_nnBIT_MASK)DMA_BIT_MASK(35)
+#define DMA_32BIT_MASK	(DMA_nnBIT_MASK)DMA_BIT_MASK(32)
+#define DMA_31BIT_MASK	(DMA_nnBIT_MASK)DMA_BIT_MASK(31)
+#define DMA_30BIT_MASK	(DMA_nnBIT_MASK)DMA_BIT_MASK(30)
+#define DMA_29BIT_MASK	(DMA_nnBIT_MASK)DMA_BIT_MASK(29)
+#define DMA_28BIT_MASK	(DMA_nnBIT_MASK)DMA_BIT_MASK(28)
+#define DMA_24BIT_MASK	(DMA_nnBIT_MASK)DMA_BIT_MASK(24)
 
 #define DMA_MASK_NONE	0x0ULL