I/O is always assumed little endian, so perform byte swap if necessary, as what Linux did.
Signed-off-by: Jiaxun Yang jiaxun.yang@flygoat.com --- arch/arm/include/asm/io.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h index 89b1015bc4d3..864ad5ae5c61 100644 --- a/arch/arm/include/asm/io.h +++ b/arch/arm/include/asm/io.h @@ -99,14 +99,14 @@ static inline void __raw_readsl(unsigned long addr, void *data, int longlen) #define smp_processor_id() 0
#define writeb(v,c) ({ u8 __v = v; __iowmb(); __arch_putb(__v,c); __v; }) -#define writew(v,c) ({ u16 __v = v; __iowmb(); __arch_putw(__v,c); __v; }) -#define writel(v,c) ({ u32 __v = v; __iowmb(); __arch_putl(__v,c); __v; }) -#define writeq(v,c) ({ u64 __v = v; __iowmb(); __arch_putq(__v,c); __v; }) +#define writew(v,c) ({ u16 __v = v; __iowmb(); __arch_putw((__force u16)cpu_to_le16(__v), c); __v; }) +#define writel(v,c) ({ u32 __v = v; __iowmb(); __arch_putl((__force u32)cpu_to_le32(__v), c); __v; }) +#define writeq(v,c) ({ u64 __v = v; __iowmb(); __arch_putq((__force u64)cpu_to_le64(__v), c); __v; })
#define readb(c) ({ u8 __v = __arch_getb(c); __iormb(); __v; }) -#define readw(c) ({ u16 __v = __arch_getw(c); __iormb(); __v; }) -#define readl(c) ({ u32 __v = __arch_getl(c); __iormb(); __v; }) -#define readq(c) ({ u64 __v = __arch_getq(c); __iormb(); __v; }) +#define readw(c) ({ u16 __v = le16_to_cpu((__force __le16)__arch_getw(c)); __iormb(); __v; }) +#define readl(c) ({ u32 __v = le32_to_cpu((__force __le32)__arch_getl(c)); __iormb(); __v; }) +#define readq(c) ({ u64 __v = le64_to_cpu((__force __le64)__arch_getq(c)); __iormb(); __v; })
/* * Relaxed I/O memory access primitives. These follow the Device memory