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asm-generic/io.h: suppress endianness warnings for readq() and writeq()

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[ Upstream commit d564fa1ff19e893e2971d66e5c8f49dc1cdc8ffc ]

Commit c1d55d50139b ("asm-generic/io.h: Fix sparse warnings on
big-endian architectures") missed fixing the 64-bit accessors.

Arnd explains in the attached link why the casts are necessary, even if
__raw_readq() and __raw_writeq() do not take endian-specific types.

Link: https://lore.kernel.org/lkml/9105d6fc-880b-4734-857d-e3d30b87ccf6@app.fastmail.com/
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Vladimir Oltean 2023-01-09 15:11:52 +02:00 • committed by Greg Kroah-Hartman
parent 944ff47a19
commit 0804f3715c
1 changed files with 2 additions and 2 deletions
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4
include/asm-generic/io.h
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@ -190,7 +190,7 @@ static inline u64 readq(const volatile void __iomem *addr)
u64 val;
__io_br();
val = __le64_to_cpu(__raw_readq(addr));
val = __le64_to_cpu((__le64 __force)__raw_readq(addr));
__io_ar(val);
return val;
}
@ -233,7 +233,7 @@ static inline void writel(u32 value, volatile void __iomem *addr)
static inline void writeq(u64 value, volatile void __iomem *addr)
{
__io_bw();
__raw_writeq(__cpu_to_le64(value), addr);
__raw_writeq((u64 __force)__cpu_to_le64(value), addr);
__io_aw();
}
#endif