From c22c0dbd7d3bb7ce47779b757d567d2e7746744b Mon Sep 17 00:00:00 2001
From: Masahiro Yamada <yamada.masahiro@socionext.com>
Date: Fri, 14 Feb 2020 16:40:17 +0900
Subject: [PATCH] dma-mapping: fix the prototype of dma_map_single()

Make dma_map_single() return the dma address, and remove the
pointless volatile.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---
 arch/arm/include/asm/dma-mapping.h   | 5 +++--
 arch/nds32/include/asm/dma-mapping.h | 5 +++--
 arch/riscv/include/asm/dma-mapping.h | 5 +++--
 arch/x86/include/asm/dma-mapping.h   | 5 +++--
 4 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index d20703739f..d0895a2096 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -11,6 +11,7 @@
 #include <asm/cache.h>
 #include <cpu_func.h>
 #include <linux/dma-direction.h>
+#include <linux/types.h>
 #include <malloc.h>
 
 #define	dma_mapping_error(x, y)	0
@@ -26,8 +27,8 @@ static inline void dma_free_coherent(void *addr)
 	free(addr);
 }
 
-static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
-					   enum dma_data_direction dir)
+static inline dma_addr_t dma_map_single(void *vaddr, size_t len,
+					enum dma_data_direction dir)
 {
 	unsigned long addr = (unsigned long)vaddr;
 
diff --git a/arch/nds32/include/asm/dma-mapping.h b/arch/nds32/include/asm/dma-mapping.h
index c8876ceadd..9387dec347 100644
--- a/arch/nds32/include/asm/dma-mapping.h
+++ b/arch/nds32/include/asm/dma-mapping.h
@@ -10,6 +10,7 @@
 #include <asm/cache.h>
 #include <cpu_func.h>
 #include <linux/dma-direction.h>
+#include <linux/types.h>
 #include <malloc.h>
 
 static void *dma_alloc_coherent(size_t len, unsigned long *handle)
@@ -18,8 +19,8 @@ static void *dma_alloc_coherent(size_t len, unsigned long *handle)
 	return (void *)*handle;
 }
 
-static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
-					   enum dma_data_direction dir)
+static inline dma_addr_t dma_map_single(void *vaddr, size_t len,
+					enum dma_data_direction dir)
 {
 	unsigned long addr = (unsigned long)vaddr;
 
diff --git a/arch/riscv/include/asm/dma-mapping.h b/arch/riscv/include/asm/dma-mapping.h
index 6cc3946959..eac56f8fbd 100644
--- a/arch/riscv/include/asm/dma-mapping.h
+++ b/arch/riscv/include/asm/dma-mapping.h
@@ -10,6 +10,7 @@
 #define __ASM_RISCV_DMA_MAPPING_H
 
 #include <common.h>
+#include <linux/types.h>
 #include <asm/cache.h>
 #include <cpu_func.h>
 #include <linux/dma-direction.h>
@@ -28,8 +29,8 @@ static inline void dma_free_coherent(void *addr)
 	free(addr);
 }
 
-static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
-					   enum dma_data_direction dir)
+static inline dma_addr_t dma_map_single(void *vaddr, size_t len,
+					enum dma_data_direction dir)
 {
 	unsigned long addr = (unsigned long)vaddr;
 
diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h
index 900b99b8a6..7e205e3313 100644
--- a/arch/x86/include/asm/dma-mapping.h
+++ b/arch/x86/include/asm/dma-mapping.h
@@ -11,6 +11,7 @@
 #include <asm/cache.h>
 #include <cpu_func.h>
 #include <linux/dma-direction.h>
+#include <linux/types.h>
 #include <malloc.h>
 
 #define	dma_mapping_error(x, y)	0
@@ -26,8 +27,8 @@ static inline void dma_free_coherent(void *addr)
 	free(addr);
 }
 
-static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
-					   enum dma_data_direction dir)
+static inline dma_addr_t dma_map_single(void *vaddr, size_t len,
+					enum dma_data_direction dir)
 {
 	unsigned long addr = (unsigned long)vaddr;
 
-- 
2.25.1