io: change inX() to have their own IO barrier overrides (87fe2d54) · Commits · 戴 / test

Open code readX() inside inX() so that inX() variants have their own overrideable Port IO barrier combinations as __io_pbr() and __io_par() for actions to be taken before port IO and after port IO read. Signed-off-by:

Sinan Kaya <okaya@codeaurora.org> Signed-off-by:

Arnd Bergmann <arnd@arndb.de>

include/asm-generic/io.h

+18 −3

Original line number	Diff line number	Diff line
		@@ -433,7 +433,12 @@ static inline void writesq(volatile void __iomem addr, const void buffer,
		#define inb inb
		static inline u8 inb(unsigned long addr)
		{
		return readb(PCI_IOBASE + addr);
		u8 val;

		__io_pbr();
		val = __raw_readb(PCI_IOBASE + addr);
		__io_par();
		return val;
		}
		#endif

		@@ -441,7 +446,12 @@ static inline u8 inb(unsigned long addr)
		#define inw inw
		static inline u16 inw(unsigned long addr)
		{
		return readw(PCI_IOBASE + addr);
		u16 val;

		__io_pbr();
		val = __le16_to_cpu(__raw_readw(PCI_IOBASE + addr));
		__io_par();
		return val;
		}
		#endif

		@@ -449,7 +459,12 @@ static inline u16 inw(unsigned long addr)
		#define inl inl
		static inline u32 inl(unsigned long addr)
		{
		return readl(PCI_IOBASE + addr);
		u32 val;

		__io_pbr();
		val = __le32_to_cpu(__raw_readl(PCI_IOBASE + addr));
		__io_par();
		return val;
		}
		#endif

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