From: Vladimir Oltean Date: Mon, 9 Jan 2023 13:11:52 +0000 (+0200) Subject: asm-generic/io.h: suppress endianness warnings for readq() and writeq() X-Git-Tag: v6.1.37~2017 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=88b9e97c1447830039924e989f9c5db6fdca7715;p=platform%2Fkernel%2Flinux-starfive.git asm-generic/io.h: suppress endianness warnings for readq() and writeq() [ 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 Signed-off-by: Vladimir Oltean Reviewed-by: Jonathan Cameron Signed-off-by: Arnd Bergmann Signed-off-by: Sasha Levin --- diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index a68f8fb..cde032f 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -236,7 +236,7 @@ static inline u64 readq(const volatile void __iomem *addr) log_read_mmio(64, addr, _THIS_IP_); __io_br(); - val = __le64_to_cpu(__raw_readq(addr)); + val = __le64_to_cpu((__le64 __force)__raw_readq(addr)); __io_ar(val); log_post_read_mmio(val, 64, addr, _THIS_IP_); return val; @@ -287,7 +287,7 @@ static inline void writeq(u64 value, volatile void __iomem *addr) { log_write_mmio(value, 64, addr, _THIS_IP_); __io_bw(); - __raw_writeq(__cpu_to_le64(value), addr); + __raw_writeq((u64 __force)__cpu_to_le64(value), addr); __io_aw(); log_post_write_mmio(value, 64, addr, _THIS_IP_); }