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| author | Luc Van Oostenryck <luc.vanoostenryck@gmail.com> | 2020-08-11 18:33:54 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-26 10:27:09 +0200 |
| commit | d0f13ebd32e13f18675a28368c1345dd1d463296 (patch) | |
| tree | 3d2339bcaff6a883717e251b0772c0b7b77f8a31 | |
| parent | cc97b011468dc86dfa188b0b06b4af19fe36758e (diff) | |
| download | linux-stable-d0f13ebd32e13f18675a28368c1345dd1d463296.tar.gz linux-stable-d0f13ebd32e13f18675a28368c1345dd1d463296.tar.bz2 linux-stable-d0f13ebd32e13f18675a28368c1345dd1d463296.zip | |
alpha: fix annotation of io{read,write}{16,32}be()
[ Upstream commit bd72866b8da499e60633ff28f8a4f6e09ca78efe ]
These accessors must be used to read/write a big-endian bus. The value
returned or written is native-endian.
However, these accessors are defined using be{16,32}_to_cpu() or
cpu_to_be{16,32}() to make the endian conversion but these expect a
__be{16,32} when none is present. Keeping them would need a force cast
that would solve nothing at all.
So, do the conversion using swab{16,32}, like done in asm-generic for
similar situations.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Link: http://lkml.kernel.org/r/20200622114232.80039-1-luc.vanoostenryck@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/alpha/include/asm/io.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h index ff4049155c84..355aec0867f4 100644 --- a/arch/alpha/include/asm/io.h +++ b/arch/alpha/include/asm/io.h @@ -491,10 +491,10 @@ extern inline void writeq(u64 b, volatile void __iomem *addr) } #endif -#define ioread16be(p) be16_to_cpu(ioread16(p)) -#define ioread32be(p) be32_to_cpu(ioread32(p)) -#define iowrite16be(v,p) iowrite16(cpu_to_be16(v), (p)) -#define iowrite32be(v,p) iowrite32(cpu_to_be32(v), (p)) +#define ioread16be(p) swab16(ioread16(p)) +#define ioread32be(p) swab32(ioread32(p)) +#define iowrite16be(v,p) iowrite16(swab16(v), (p)) +#define iowrite32be(v,p) iowrite32(swab32(v), (p)) #define inb_p inb #define inw_p inw |