[PATCH] powerpc/io: remove old GCC version implementation
From: Christophe Leroy <hidden>
Date: 2018-10-16 12:33:44
GCC 4.6 is the minimum supported now. Signed-off-by: Christophe Leroy <redacted> --- arch/powerpc/include/asm/io.h | 20 -------------------- 1 file changed, 20 deletions(-)
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 0a034519957d..3ef40b703c4a 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h@@ -111,25 +111,6 @@ extern bool isa_io_special; #define IO_SET_SYNC_FLAG() #endif -/* gcc 4.0 and older doesn't have 'Z' constraint */ -#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ == 0) -#define DEF_MMIO_IN_X(name, size, insn) \ -static inline u##size name(const volatile u##size __iomem *addr) \ -{ \ - 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_X(name, size, insn) \ -static inline void name(volatile u##size __iomem *addr, u##size val) \ -{ \ - __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_X(name, size, insn) \ static inline u##size name(const volatile u##size __iomem *addr) \ { \
@@ -146,7 +127,6 @@ static inline void name(volatile u##size __iomem *addr, u##size val) \ : "=Z" (*addr) : "r" (val) : "memory"); \ IO_SET_SYNC_FLAG(); \ } -#endif #define DEF_MMIO_IN_D(name, size, insn) \ static inline u##size name(const volatile u##size __iomem *addr) \
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2.13.3