From f53b8f4ff898f2c8df9ac9c958ed6aedbe00c6ed Mon Sep 17 00:00:00 2001
From: Trent Piepho <tpiepho@freescale.com>
Date: Wed, 28 May 2008 09:48:32 +1000
Subject: [PATCH] --- yaml --- r: 101647 b: refs/heads/master c:
 0f3d6bcd391b058c619fc30e8022e8a29fbf4bef h: refs/heads/master i:   101645:
 355597a27486640c794eb12841ec9a832fe4ec4a   101643:
 b47e816b540730d605d330346c69c5f99b3bad4a   101639:
 8b5d3a42e02134c3b7bdea285c5cb63348fa6484   101631:
 ce916a446606795c26acc08595a6684a08a0c97b v: v3

---
 [refs]                         |  2 +-
 trunk/include/asm-powerpc/io.h | 57 +++++++++++++++++++++++++---------
 2 files changed, 43 insertions(+), 16 deletions(-)

diff --git a/[refs] b/[refs]
index 4e8822ebe7b9..b904d3d3f969 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 19fc65b5251dfd90312ae0142cc8650cd273e6a6
+refs/heads/master: 0f3d6bcd391b058c619fc30e8022e8a29fbf4bef
diff --git a/trunk/include/asm-powerpc/io.h b/trunk/include/asm-powerpc/io.h
index 89189488e286..6db422d8e2a0 100644
--- a/trunk/include/asm-powerpc/io.h
+++ b/trunk/include/asm-powerpc/io.h
@@ -95,33 +95,60 @@ extern resource_size_t isa_mem_base;
 #define IO_SET_SYNC_FLAG()
 #endif
 
-#define DEF_MMIO_IN(name, type, insn)					\
-static inline type name(const volatile type __iomem *addr)		\
+/* gcc 4.0 and older doesn't have 'Z' constraint */
+#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ == 0)
+#define DEF_MMIO_IN_LE(name, size, insn)				\
+static inline u##size name(const volatile u##size __iomem *addr)	\
 {									\
-	type ret;							\
-	__asm__ __volatile__("sync;" insn ";twi 0,%0,0;isync"		\
+	u##size ret;							\
+	__asm__ __volatile__("sync;"#insn" %0,0,%1;twi 0,%0,0;isync"	\
 		: "=r" (ret) : "r" (addr), "m" (*addr) : "memory");	\
 	return ret;							\
 }
 
-#define DEF_MMIO_OUT(name, type, insn)					\
-static inline void name(volatile type __iomem *addr, type val)		\
+#define DEF_MMIO_OUT_LE(name, size, insn) 				\
+static inline void name(volatile u##size __iomem *addr, u##size val)	\
 {									\
-	__asm__ __volatile__("sync;" insn				\
+	__asm__ __volatile__("sync;"#insn" %1,0,%2"			\
 		: "=m" (*addr) : "r" (val), "r" (addr) : "memory");	\
 	IO_SET_SYNC_FLAG();						\
 }
+#else /* newer gcc */
+#define DEF_MMIO_IN_LE(name, size, insn)				\
+static inline u##size name(const volatile u##size __iomem *addr)	\
+{									\
+	u##size ret;							\
+	__asm__ __volatile__("sync;"#insn" %0,%y1;twi 0,%0,0;isync"	\
+		: "=r" (ret) : "Z" (*addr) : "memory");			\
+	return ret;							\
+}
+
+#define DEF_MMIO_OUT_LE(name, size, insn) 				\
+static inline void name(volatile u##size __iomem *addr, u##size val)	\
+{									\
+	__asm__ __volatile__("sync;"#insn" %1,%y0"			\
+		: "=Z" (*addr) : "r" (val) : "memory");			\
+	IO_SET_SYNC_FLAG();						\
+}
+#endif
 
+#define DEF_MMIO_IN_BE(name, size, insn)				\
+static inline u##size name(const volatile u##size __iomem *addr)	\
+{									\
+	u##size ret;							\
+	__asm__ __volatile__("sync;"#insn"%U1%X1 %0,%1;twi 0,%0,0;isync"\
+		: "=r" (ret) : "m" (*addr) : "memory");			\
+	return ret;							\
+}
 
-#define DEF_MMIO_IN_BE(name, size, insn) \
-	DEF_MMIO_IN(name, u##size, __stringify(insn)"%U2%X2 %0,%2")
-#define DEF_MMIO_IN_LE(name, size, insn) \
-	DEF_MMIO_IN(name, u##size, __stringify(insn)" %0,0,%1")
+#define DEF_MMIO_OUT_BE(name, size, insn)				\
+static inline void name(volatile u##size __iomem *addr, u##size val)	\
+{									\
+	__asm__ __volatile__("sync;"#insn"%U0%X0 %1,%0"			\
+		: "=m" (*addr) : "r" (val) : "memory");			\
+	IO_SET_SYNC_FLAG();						\
+}
 
-#define DEF_MMIO_OUT_BE(name, size, insn) \
-	DEF_MMIO_OUT(name, u##size, __stringify(insn)"%U0%X0 %1,%0")
-#define DEF_MMIO_OUT_LE(name, size, insn) \
-	DEF_MMIO_OUT(name, u##size, __stringify(insn)" %1,0,%2")
 
 DEF_MMIO_IN_BE(in_8,     8, lbz);
 DEF_MMIO_IN_BE(in_be16, 16, lhz);