asm-generic/io.h: suppress endianness warnings for relaxed accessors

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@nxp.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Author: vladimiroltean

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