[PATCH] ARM: 2747/1: allow platforms to provide their own iomap implementation
Patch from Lennert Buytenhek
This patch conditionalises the io{read,write}{8,16,32} defines and the
prototypes for ioport_map/ioport_unmap in asm-arm/io.h on ioread8 not
already having been defined. This is done so that platforms can provide
their own implementation of the iomap API, ixp2000 for example needs
this.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/include/asm-arm/io.h b/include/asm-arm/io.h
index 08a4630..cc4b5f5 100644
--- a/include/asm-arm/io.h
+++ b/include/asm-arm/io.h
@@ -275,6 +275,7 @@
/*
* io{read,write}{8,16,32} macros
*/
+#ifndef ioread8
#define ioread8(p) ({ unsigned int __v = __raw_readb(p); __v; })
#define ioread16(p) ({ unsigned int __v = le16_to_cpu(__raw_readw(p)); __v; })
#define ioread32(p) ({ unsigned int __v = le32_to_cpu(__raw_readl(p)); __v; })
@@ -293,6 +294,7 @@
extern void __iomem *ioport_map(unsigned long port, unsigned int nr);
extern void ioport_unmap(void __iomem *addr);
+#endif
struct pci_dev;