diff options
Diffstat (limited to 'include/asm-generic/io.h')
| -rw-r--r-- | include/asm-generic/io.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index 00483d769d86..9db042304df3 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -175,6 +175,43 @@ static inline void writeq(u64 value, volatile void __iomem *addr) #endif /* CONFIG_64BIT */ /* + * {read,write}{b,w,l,q}_relaxed() are like the regular version, but + * are not guaranteed to provide ordering against spinlocks or memory + * accesses. + */ +#ifndef readb_relaxed +#define readb_relaxed readb +#endif + +#ifndef readw_relaxed +#define readw_relaxed readw +#endif + +#ifndef readl_relaxed +#define readl_relaxed readl +#endif + +#ifndef readq_relaxed +#define readq_relaxed readq +#endif + +#ifndef writeb_relaxed +#define writeb_relaxed writeb +#endif + +#ifndef writew_relaxed +#define writew_relaxed writew +#endif + +#ifndef writel_relaxed +#define writel_relaxed writel +#endif + +#ifndef writeq_relaxed +#define writeq_relaxed writeq +#endif + +/* * {read,write}s{b,w,l,q}() repeatedly access the same memory address in * native endianness in 8-, 16-, 32- or 64-bit chunks (@count times). */ |