[PATCH 4/6] powerpc: asm/io.h: remove split ioread64/iowrite64 helpers

[Arnd Bergmann]

From: Arnd Bergmann <arnd@xxxxxxxx>

In previous kernels, there were conflicting definitions for what
ioread64_lo_hi() and similar functions were supposed to do on
architectures with native 64-bit MMIO. Based on the actual usage in
drivers, they are in fact expected to be a pair of 32-bit accesses on
all architectures, which makes the powerpc64 definition wrong.

Remove it and use the generic implementation instead.

Drivers that want to have split lo/hi or hi/lo accesses on 32-bit
architectures but can use 64-bit accesses where supported should instead
use ioread64()/iowrite64() after including the corresponding header file.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 arch/powerpc/include/asm/io.h | 48 -----------------------------------
 1 file changed, 48 deletions(-)

diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index fd92ac450169..d36c4ccaca08 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -738,35 +738,11 @@ static inline unsigned int ioread32be(const void __iomem *addr)
 #define ioread32be ioread32be
 
 #ifdef __powerpc64__
-static inline u64 ioread64_lo_hi(const void __iomem *addr)
-{
-	return readq(addr);
-}
-#define ioread64_lo_hi ioread64_lo_hi
-
-static inline u64 ioread64_hi_lo(const void __iomem *addr)
-{
-	return readq(addr);
-}
-#define ioread64_hi_lo ioread64_hi_lo
-
 static inline u64 ioread64be(const void __iomem *addr)
 {
 	return readq_be(addr);
 }
 #define ioread64be ioread64be
-
-static inline u64 ioread64be_lo_hi(const void __iomem *addr)
-{
-	return readq_be(addr);
-}
-#define ioread64be_lo_hi ioread64be_lo_hi
-
-static inline u64 ioread64be_hi_lo(const void __iomem *addr)
-{
-	return readq_be(addr);
-}
-#define ioread64be_hi_lo ioread64be_hi_lo
 #endif /* __powerpc64__ */
 
 static inline void iowrite16be(u16 val, void __iomem *addr)
@@ -782,35 +758,11 @@ static inline void iowrite32be(u32 val, void __iomem *addr)
 #define iowrite32be iowrite32be
 
 #ifdef __powerpc64__
-static inline void iowrite64_lo_hi(u64 val, void __iomem *addr)
-{
-	writeq(val, addr);
-}
-#define iowrite64_lo_hi iowrite64_lo_hi
-
-static inline void iowrite64_hi_lo(u64 val, void __iomem *addr)
-{
-	writeq(val, addr);
-}
-#define iowrite64_hi_lo iowrite64_hi_lo
-
 static inline void iowrite64be(u64 val, void __iomem *addr)
 {
 	writeq_be(val, addr);
 }
 #define iowrite64be iowrite64be
-
-static inline void iowrite64be_lo_hi(u64 val, void __iomem *addr)
-{
-	writeq_be(val, addr);
-}
-#define iowrite64be_lo_hi iowrite64be_lo_hi
-
-static inline void iowrite64be_hi_lo(u64 val, void __iomem *addr)
-{
-	writeq_be(val, addr);
-}
-#define iowrite64be_hi_lo iowrite64be_hi_lo
 #endif /* __powerpc64__ */
 
 struct pci_dev;
-- 
2.39.5