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authorOlav Kongas <ok@ee.rmk.(none)>2005-04-29 22:08:34 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-04-29 22:08:34 +0100
commit05f9869bf20e11bcb9b64b9ebd6a9cf89d6b71ba (patch)
tree007c152142085c5124337eda056e9798be53e084 /include/asm-arm/io.h
parent2d2669b62984b8d76b05a6a045390a3250317d21 (diff)
downloadop-kernel-dev-05f9869bf20e11bcb9b64b9ebd6a9cf89d6b71ba.zip
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[PATCH] ARM: 2649/1: Fix 'sparse -Wbitwise' warnings from MMIO macros
Patch from Olav Kongas On ARM, the outX() and writeX() families of macros take the result of cpu_to_leYY(), which is of restricted type __leYY, and feed it to __raw_writeX(), which expect an argument of unrestricted type. This results in 'sparse -Wbitwise' warnings about incorrect types in assignments. Analogous type mismatch warnings are issued for inX() and readX() counterparts. The below patch resolves these warnings by adding forced typecasts. Signed-off-by: Olav Kongas Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm/io.h')
-rw-r--r--include/asm-arm/io.h28
1 files changed, 18 insertions, 10 deletions
diff --git a/include/asm-arm/io.h b/include/asm-arm/io.h
index 69bc7a3..658ffa3 100644
--- a/include/asm-arm/io.h
+++ b/include/asm-arm/io.h
@@ -99,12 +99,16 @@ extern void __readwrite_bug(const char *fn);
*/
#ifdef __io
#define outb(v,p) __raw_writeb(v,__io(p))
-#define outw(v,p) __raw_writew(cpu_to_le16(v),__io(p))
-#define outl(v,p) __raw_writel(cpu_to_le32(v),__io(p))
+#define outw(v,p) __raw_writew((__force __u16) \
+ cpu_to_le16(v),__io(p))
+#define outl(v,p) __raw_writel((__force __u32) \
+ cpu_to_le32(v),__io(p))
-#define inb(p) ({ unsigned int __v = __raw_readb(__io(p)); __v; })
-#define inw(p) ({ unsigned int __v = le16_to_cpu(__raw_readw(__io(p))); __v; })
-#define inl(p) ({ unsigned int __v = le32_to_cpu(__raw_readl(__io(p))); __v; })
+#define inb(p) ({ __u8 __v = __raw_readb(__io(p)); __v; })
+#define inw(p) ({ __u16 __v = le16_to_cpu((__force __le16) \
+ __raw_readw(__io(p))); __v; })
+#define inl(p) ({ __u32 __v = le32_to_cpu((__force __le32) \
+ __raw_readl(__io(p))); __v; })
#define outsb(p,d,l) __raw_writesb(__io(p),d,l)
#define outsw(p,d,l) __raw_writesw(__io(p),d,l)
@@ -149,9 +153,11 @@ extern void _memset_io(void __iomem *, int, size_t);
* IO port primitives for more information.
*/
#ifdef __mem_pci
-#define readb(c) ({ unsigned int __v = __raw_readb(__mem_pci(c)); __v; })
-#define readw(c) ({ unsigned int __v = le16_to_cpu(__raw_readw(__mem_pci(c))); __v; })
-#define readl(c) ({ unsigned int __v = le32_to_cpu(__raw_readl(__mem_pci(c))); __v; })
+#define readb(c) ({ __u8 __v = __raw_readb(__mem_pci(c)); __v; })
+#define readw(c) ({ __u16 __v = le16_to_cpu((__force __le16) \
+ __raw_readw(__mem_pci(c))); __v; })
+#define readl(c) ({ __u32 __v = le32_to_cpu((__force __le32) \
+ __raw_readl(__mem_pci(c))); __v; })
#define readb_relaxed(addr) readb(addr)
#define readw_relaxed(addr) readw(addr)
#define readl_relaxed(addr) readl(addr)
@@ -161,8 +167,10 @@ extern void _memset_io(void __iomem *, int, size_t);
#define readsl(p,d,l) __raw_readsl(__mem_pci(p),d,l)
#define writeb(v,c) __raw_writeb(v,__mem_pci(c))
-#define writew(v,c) __raw_writew(cpu_to_le16(v),__mem_pci(c))
-#define writel(v,c) __raw_writel(cpu_to_le32(v),__mem_pci(c))
+#define writew(v,c) __raw_writew((__force __u16) \
+ cpu_to_le16(v),__mem_pci(c))
+#define writel(v,c) __raw_writel((__force __u32) \
+ cpu_to_le32(v),__mem_pci(c))
#define writesb(p,d,l) __raw_writesb(__mem_pci(p),d,l)
#define writesw(p,d,l) __raw_writesw(__mem_pci(p),d,l)
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