arch: rely on asm-generic/io.h for default ioremap_* definitions

Various architectures that use asm-generic/io.h still defined their
own default versions of ioremap_nocache, ioremap_wt and ioremap_wc
that point back to plain ioremap directly or indirectly.  Remove these
definitions and rely on asm-generic/io.h instead.  For this to work
the backup ioremap_* defintions needs to be changed to purely cpp
macros instea of inlines to cover for architectures like openrisc
that only define ioremap after including <asm-generic/io.h>.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Palmer Dabbelt <palmer@dabbelt.com>

13 files changed, 3 insertions, 51 deletions

diff --git a/arch/arc/include/asm/io.h b/arch/arc/include/asm/io.h
index 72f7929736f8..8f777d6441a5 100644
--- a/arch/arc/include/asm/io.h
+++ b/arch/arc/include/asm/io.h
@@ -34,10 +34,6 @@ static inline void ioport_unmap(void __iomem *addr)
 
 extern void iounmap(const void __iomem *addr);
 
-#define ioremap_nocache(phy, sz)	ioremap(phy, sz)
-#define ioremap_wc(phy, sz)		ioremap(phy, sz)
-#define ioremap_wt(phy, sz)		ioremap(phy, sz)
-
 /*
  * io{read,write}{16,32}be() macros
  */
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index 924f9dd502ed..aefdabdbeb84 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -392,7 +392,6 @@ static inline void memcpy_toio(volatile void __iomem *to, const void *from,
  */
 void __iomem *ioremap(resource_size_t res_cookie, size_t size);
 #define ioremap ioremap
-#define ioremap_nocache ioremap
 
 /*
  * Do not use ioremap_cache for mapping memory. Use memremap instead.
diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index 323cb306bd28..4e531f57147d 100644
--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -167,9 +167,7 @@ extern void iounmap(volatile void __iomem *addr);
 extern void __iomem *ioremap_cache(phys_addr_t phys_addr, size_t size);
 
 #define ioremap(addr, size)		__ioremap((addr), (size), __pgprot(PROT_DEVICE_nGnRE))
-#define ioremap_nocache(addr, size)	__ioremap((addr), (size), __pgprot(PROT_DEVICE_nGnRE))
 #define ioremap_wc(addr, size)		__ioremap((addr), (size), __pgprot(PROT_NORMAL_NC))
-#define ioremap_wt(addr, size)		__ioremap((addr), (size), __pgprot(PROT_DEVICE_nGnRE))
 
 /*
  * PCI configuration space mapping function.
diff --git a/arch/csky/include/asm/io.h b/arch/csky/include/asm/io.h
index 80d071e2567f..a4b9fb616faa 100644
--- a/arch/csky/include/asm/io.h
+++ b/arch/csky/include/asm/io.h
@@ -42,7 +42,6 @@ extern void iounmap(void *addr);
 
 #define ioremap(addr, size)		__ioremap((addr), (size), pgprot_noncached(PAGE_KERNEL))
 #define ioremap_wc(addr, size)		__ioremap((addr), (size), pgprot_writecombine(PAGE_KERNEL))
-#define ioremap_nocache(addr, size)	ioremap((addr), (size))
 #define ioremap_cache			ioremap_cache
 
 #include <asm-generic/io.h>
diff --git a/arch/ia64/include/asm/io.h b/arch/ia64/include/asm/io.h
index fec9df9609ed..3d666a11a2de 100644
--- a/arch/ia64/include/asm/io.h
+++ b/arch/ia64/include/asm/io.h
@@ -263,7 +263,6 @@ static inline void __iomem * ioremap_cache (unsigned long phys_addr, unsigned lo
 	return ioremap(phys_addr, size);
 }
 #define ioremap ioremap
-#define ioremap_nocache ioremap
 #define ioremap_cache ioremap_cache
 #define ioremap_uc ioremap_uc
 #define iounmap iounmap
diff --git a/arch/microblaze/include/asm/io.h b/arch/microblaze/include/asm/io.h
index 86c95b2a1ce1..d33c61737b8b 100644
--- a/arch/microblaze/include/asm/io.h
+++ b/arch/microblaze/include/asm/io.h
@@ -39,9 +39,6 @@ extern resource_size_t isa_mem_base;
 extern void iounmap(volatile void __iomem *addr);
 
 extern void __iomem *ioremap(phys_addr_t address, unsigned long size);
-#define ioremap_nocache(addr, size)		ioremap((addr), (size))
-#define ioremap_wc(addr, size)			ioremap((addr), (size))
-#define ioremap_wt(addr, size)			ioremap((addr), (size))
 
 #endif /* CONFIG_MMU */
 
diff --git a/arch/nios2/include/asm/io.h b/arch/nios2/include/asm/io.h
index 74ab34aa6731..d108937c321e 100644
--- a/arch/nios2/include/asm/io.h
+++ b/arch/nios2/include/asm/io.h
@@ -33,10 +33,6 @@ static inline void iounmap(void __iomem *addr)
 	__iounmap(addr);
 }
 
-#define ioremap_nocache ioremap
-#define ioremap_wc ioremap
-#define ioremap_wt ioremap
-
 /* Pages to physical address... */
 #define page_to_phys(page)	virt_to_phys(page_to_virt(page))
 
diff --git a/arch/openrisc/include/asm/io.h b/arch/openrisc/include/asm/io.h
index 5b81a96ab85e..e18f038b2a6d 100644
--- a/arch/openrisc/include/asm/io.h
+++ b/arch/openrisc/include/asm/io.h
@@ -25,7 +25,6 @@
 #define PIO_OFFSET		0
 #define PIO_MASK		0
 
-#define ioremap_nocache ioremap
 #include <asm-generic/io.h>
 #include <asm/pgtable.h>
 
diff --git a/arch/riscv/include/asm/io.h b/arch/riscv/include/asm/io.h
index 3ba4d93721d3..8a5733c09e45 100644
--- a/arch/riscv/include/asm/io.h
+++ b/arch/riscv/include/asm/io.h
@@ -16,16 +16,6 @@
 #include <asm/pgtable.h>
 
 extern void __iomem *ioremap(phys_addr_t offset, unsigned long size);
-
-/*
- * The RISC-V ISA doesn't yet specify how to query or modify PMAs, so we can't
- * change the properties of memory regions.  This should be fixed by the
- * upcoming platform spec.
- */
-#define ioremap_nocache(addr, size) ioremap((addr), (size))
-#define ioremap_wc(addr, size) ioremap((addr), (size))
-#define ioremap_wt(addr, size) ioremap((addr), (size))
-
 extern void iounmap(volatile void __iomem *addr);
 
 /* Generic IO read/write.  These perform native-endian accesses. */
diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h
index ca421614722f..5a16f500515a 100644
--- a/arch/s390/include/asm/io.h
+++ b/arch/s390/include/asm/io.h
@@ -26,10 +26,6 @@ void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr);
 
 #define IO_SPACE_LIMIT 0
 
-#define ioremap_nocache(addr, size)	ioremap(addr, size)
-#define ioremap_wc			ioremap_nocache
-#define ioremap_wt			ioremap_nocache
-
 void __iomem *ioremap(unsigned long offset, unsigned long size);
 void iounmap(volatile void __iomem *addr);
 
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index 6b5cc41319a7..9997521fc5cd 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -205,7 +205,6 @@ extern void __iomem *ioremap_encrypted(resource_size_t phys_addr, unsigned long
  */
 void __iomem *ioremap(resource_size_t offset, unsigned long size);
 #define ioremap ioremap
-#define ioremap_nocache ioremap
 
 extern void iounmap(volatile void __iomem *addr);
 #define iounmap iounmap
diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h
index 441fb56926a7..54188e69b988 100644
--- a/arch/xtensa/include/asm/io.h
+++ b/arch/xtensa/include/asm/io.h
@@ -52,10 +52,6 @@ static inline void __iomem *ioremap_cache(unsigned long offset,
 }
 #define ioremap_cache ioremap_cache
 
-#define ioremap_nocache ioremap
-#define ioremap_wc ioremap
-#define ioremap_wt ioremap
-
 static inline void iounmap(volatile void __iomem *addr)
 {
 	unsigned long va = (unsigned long) addr;
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index ed74d2e9af75..bd676f21b5bd 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -949,27 +949,15 @@ static inline void iounmap(void __iomem *addr)
 #endif /* CONFIG_MMU */
 
 #ifndef ioremap_nocache
-#define ioremap_nocache ioremap_nocache
-static inline void __iomem *ioremap_nocache(phys_addr_t offset, size_t size)
-{
-	return ioremap(offset, size);
-}
+#define ioremap_nocache ioremap
 #endif
 
 #ifndef ioremap_wc
-#define ioremap_wc ioremap_wc
-static inline void __iomem *ioremap_wc(phys_addr_t offset, size_t size)
-{
-	return ioremap_nocache(offset, size);
-}
+#define ioremap_wc ioremap
 #endif
 
 #ifndef ioremap_wt
-#define ioremap_wt ioremap_wt
-static inline void __iomem *ioremap_wt(phys_addr_t offset, size_t size)
-{
-	return ioremap_nocache(offset, size);
-}
+#define ioremap_wt ioremap
 #endif
 
 /*