Merge branch 'io' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into asm-generic

* 'io' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux:
  documentation: memory-barriers: clarify relaxed io accessor semantics
  x86: io: implement dummy relaxed accessor macros for writes
  tile: io: implement dummy relaxed accessor macros for writes
  sparc: io: implement dummy relaxed accessor macros for writes
  powerpc: io: implement dummy relaxed accessor macros for writes
  parisc: io: implement dummy relaxed accessor macros for writes
  mn10300: io: implement dummy relaxed accessor macros for writes
  m68k: io: implement dummy relaxed accessor macros for writes
  m32r: io: implement dummy relaxed accessor macros for writes
  ia64: io: implement dummy relaxed accessor macros for writes
  cris: io: implement dummy relaxed accessor macros for writes
  frv: io: implement dummy relaxed accessor macros for writes
  xtensa: io: remove dummy relaxed accessor macros for reads
  s390: io: remove dummy relaxed accessor macros for reads
  microblaze: io: remove dummy relaxed accessor macros
  asm-generic: io: implement relaxed accessor macros as conditional wrappers

Conflicts:
	include/asm-generic/io.h

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

3 files changed, 11 insertions, 10 deletions

diff --git a/arch/sparc/include/asm/io.h b/arch/sparc/include/asm/io.h
index f6902cf3cbe9..493f22c4684f 100644
--- a/arch/sparc/include/asm/io.h
+++ b/arch/sparc/include/asm/io.h
@@ -10,6 +10,15 @@
  * Defines used for both SPARC32 and SPARC64
  */
 
+/* Relaxed accessors for MMIO */
+#define readb_relaxed(__addr)		readb(__addr)
+#define readw_relaxed(__addr)		readw(__addr)
+#define readl_relaxed(__addr)		readl(__addr)
+
+#define writeb_relaxed(__b, __addr)	writeb(__b, __addr)
+#define writew_relaxed(__w, __addr)	writew(__w, __addr)
+#define writel_relaxed(__l, __addr)	writel(__l, __addr)
+
 /* Big endian versions of memory read/write routines */
 #define readb_be(__addr)	__raw_readb(__addr)
 #define readw_be(__addr)	__raw_readw(__addr)
diff --git a/arch/sparc/include/asm/io_32.h b/arch/sparc/include/asm/io_32.h
index 9f532902627c..407ac14295f4 100644
--- a/arch/sparc/include/asm/io_32.h
+++ b/arch/sparc/include/asm/io_32.h
@@ -4,10 +4,6 @@
 #include <linux/kernel.h>
 #include <linux/ioport.h>  /* struct resource */
 
-#define readb_relaxed(__addr)	readb(__addr)
-#define readw_relaxed(__addr)	readw(__addr)
-#define readl_relaxed(__addr)	readl(__addr)
-
 #define IO_SPACE_LIMIT 0xffffffff
 
 #define memset_io(d,c,sz)     _memset_io(d,c,sz)
diff --git a/arch/sparc/include/asm/io_64.h b/arch/sparc/include/asm/io_64.h
index 80b54b326d49..d50e6127325d 100644
--- a/arch/sparc/include/asm/io_64.h
+++ b/arch/sparc/include/asm/io_64.h
@@ -136,6 +136,7 @@ static inline u32 readl(const volatile void __iomem *addr)
 }
 
 #define readq readq
+#define readq_relaxed readq
 static inline u64 readq(const volatile void __iomem *addr)
 {	u64 ret;
 
@@ -175,6 +176,7 @@ static inline void writel(u32 l, volatile void __iomem *addr)
 }
 
 #define writeq writeq
+#define writeq_relaxed writeq
 static inline void writeq(u64 q, volatile void __iomem *addr)
 {
 	__asm__ __volatile__("stxa\t%r0, [%1] %2\t/* pci_writeq */"
@@ -183,7 +185,6 @@ static inline void writeq(u64 q, volatile void __iomem *addr)
 			     : "memory");
 }
 
-
 #define inb inb
 static inline u8 inb(unsigned long addr)
 {
@@ -264,11 +265,6 @@ static inline void iowrite32_rep(void __iomem *port, const void *buf, unsigned l
 	outsl((unsigned long __force)port, buf, count);
 }
 
-#define readb_relaxed(__addr)	readb(__addr)
-#define readw_relaxed(__addr)	readw(__addr)
-#define readl_relaxed(__addr)	readl(__addr)
-#define readq_relaxed(__addr)	readq(__addr)
-
 /* Valid I/O Space regions are anywhere, because each PCI bus supported
  * can live in an arbitrary area of the physical address range.
  */