From d564fa1ff19e893e2971d66e5c8f49dc1cdc8ffc Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Mon, 9 Jan 2023 15:11:52 +0200
Subject: [PATCH] asm-generic/io.h: suppress endianness warnings for readq() and writeq()
Git-commit: d564fa1ff19e893e2971d66e5c8f49dc1cdc8ffc
Patch-mainline: v6.3-rc6
References: git-fixes
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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
include/asm-generic/io.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -190,7 +190,7 @@ static inline u64 readq(const volatile v
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, vol
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