This is a note to let you know that I've just added the patch titled
asm-generic/io.h: suppress endianness warnings for relaxed accessors
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asm-generic-io.h-suppress-endianness-warnings-for-re.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 5ce955d82be941fedd778e725cbb73837c836a14
Author: Vladimir Oltean <vladimir.oltean@xxxxxxx>
Date: Mon Jan 9 15:11:53 2023 +0200
asm-generic/io.h: suppress endianness warnings for relaxed accessors
[ Upstream commit 05d3855b4d21ef3c2df26be1cbba9d2c68915fcb ]
Copy the forced type casts from the normal MMIO accessors to suppress
the sparse warnings that point out __raw_readl() returns a native endian
word (just like readl()).
Signed-off-by: Vladimir Oltean <vladimir.oltean@xxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index d78c3056c98f9..587e7e9b9a375 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -319,7 +319,7 @@ static inline u16 readw_relaxed(const volatile void __iomem *addr)
u16 val;
log_read_mmio(16, addr, _THIS_IP_, _RET_IP_);
- val = __le16_to_cpu(__raw_readw(addr));
+ val = __le16_to_cpu((__le16 __force)__raw_readw(addr));
log_post_read_mmio(val, 16, addr, _THIS_IP_, _RET_IP_);
return val;
}
@@ -332,7 +332,7 @@ static inline u32 readl_relaxed(const volatile void __iomem *addr)
u32 val;
log_read_mmio(32, addr, _THIS_IP_, _RET_IP_);
- val = __le32_to_cpu(__raw_readl(addr));
+ val = __le32_to_cpu((__le32 __force)__raw_readl(addr));
log_post_read_mmio(val, 32, addr, _THIS_IP_, _RET_IP_);
return val;
}
@@ -345,7 +345,7 @@ static inline u64 readq_relaxed(const volatile void __iomem *addr)
u64 val;
log_read_mmio(64, addr, _THIS_IP_, _RET_IP_);
- val = __le64_to_cpu(__raw_readq(addr));
+ val = __le64_to_cpu((__le64 __force)__raw_readq(addr));
log_post_read_mmio(val, 64, addr, _THIS_IP_, _RET_IP_);
return val;
}
@@ -366,7 +366,7 @@ static inline void writeb_relaxed(u8 value, volatile void __iomem *addr)
static inline void writew_relaxed(u16 value, volatile void __iomem *addr)
{
log_write_mmio(value, 16, addr, _THIS_IP_, _RET_IP_);
- __raw_writew(cpu_to_le16(value), addr);
+ __raw_writew((u16 __force)cpu_to_le16(value), addr);
log_post_write_mmio(value, 16, addr, _THIS_IP_, _RET_IP_);
}
#endif
@@ -376,7 +376,7 @@ static inline void writew_relaxed(u16 value, volatile void __iomem *addr)
static inline void writel_relaxed(u32 value, volatile void __iomem *addr)
{
log_write_mmio(value, 32, addr, _THIS_IP_, _RET_IP_);
- __raw_writel(__cpu_to_le32(value), addr);
+ __raw_writel((u32 __force)__cpu_to_le32(value), addr);
log_post_write_mmio(value, 32, addr, _THIS_IP_, _RET_IP_);
}
#endif
@@ -386,7 +386,7 @@ static inline void writel_relaxed(u32 value, volatile void __iomem *addr)
static inline void writeq_relaxed(u64 value, volatile void __iomem *addr)
{
log_write_mmio(value, 64, addr, _THIS_IP_, _RET_IP_);
- __raw_writeq(__cpu_to_le64(value), addr);
+ __raw_writeq((u64 __force)__cpu_to_le64(value), addr);
log_post_write_mmio(value, 64, addr, _THIS_IP_, _RET_IP_);
}
#endif
