[PATCH 4/8] asm-generic: io.h: remove wrong use of IOMEM

[Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>]

addr is already __iomem, but we need to force strip that away to use it
as normal pointer. Define __io_virt like Linux does and use it.

Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
---
 include/asm-generic/io.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 150a97645b6b..a4b0dc4b4337 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -425,6 +425,8 @@ static inline void iowrite64be(u64 value, volatile void __iomem *addr)
 #define IOMEM(addr)	((void __force __iomem *)(addr))
 #endif
 
+#define __io_virt(x) ((void __force *)(x))
+
 #ifndef memset_io
 #define memset_io memset_io
 /**
@@ -438,7 +440,7 @@ static inline void iowrite64be(u64 value, volatile void __iomem *addr)
 static inline void memset_io(volatile void __iomem *addr, int value,
 			     size_t size)
 {
-	memset(IOMEM(addr), value, size);
+	memset(__io_virt(addr), value, size);
 }
 #endif
 
@@ -456,7 +458,7 @@ static inline void memcpy_fromio(void *buffer,
 				 const volatile void __iomem *addr,
 				 size_t size)
 {
-	memcpy(buffer, IOMEM(addr), size);
+	memcpy(buffer, __io_virt(addr), size);
 }
 #endif
 
@@ -473,7 +475,7 @@ static inline void memcpy_fromio(void *buffer,
 static inline void memcpy_toio(volatile void __iomem *addr, const void *buffer,
 			       size_t size)
 {
-	memcpy(IOMEM(addr), buffer, size);
+	memcpy(__io_virt(addr), buffer, size);
 }
 #endif
 
-- 
2.30.0


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