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Subject[RFT 03/13] sh: Constify ioreadX() iomem argument (as in generic implementation)
The ioreadX() helpers have inconsistent interface.  On some architectures
void *__iomem address argument is a pointer to const, on some not.

Implementations of ioreadX() do not modify the memory under the address
so they can be converted to a "const" version for const-safety and
consistency among architectures.

Signed-off-by: Krzysztof Kozlowski <>
arch/sh/kernel/iomap.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/sh/kernel/iomap.c b/arch/sh/kernel/iomap.c
index ef9e2c97cbb7..bd5e212c6ea6 100644
--- a/arch/sh/kernel/iomap.c
+++ b/arch/sh/kernel/iomap.c
@@ -8,31 +8,31 @@
#include <linux/module.h>
#include <linux/io.h>

-unsigned int ioread8(void __iomem *addr)
+unsigned int ioread8(const void __iomem *addr)
return readb(addr);

-unsigned int ioread16(void __iomem *addr)
+unsigned int ioread16(const void __iomem *addr)
return readw(addr);

-unsigned int ioread16be(void __iomem *addr)
+unsigned int ioread16be(const void __iomem *addr)
return be16_to_cpu(__raw_readw(addr));

-unsigned int ioread32(void __iomem *addr)
+unsigned int ioread32(const void __iomem *addr)
return readl(addr);

-unsigned int ioread32be(void __iomem *addr)
+unsigned int ioread32be(const void __iomem *addr)
return be32_to_cpu(__raw_readl(addr));
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