diff options
Diffstat (limited to 'arch/mips')
-rw-r--r-- | arch/mips/include/asm/uaccess.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/arch/mips/include/asm/uaccess.h b/arch/mips/include/asm/uaccess.h index 09ff5bb17445..42b9cec2ee96 100644 --- a/arch/mips/include/asm/uaccess.h +++ b/arch/mips/include/asm/uaccess.h | |||
@@ -104,11 +104,21 @@ | |||
104 | 104 | ||
105 | #define __access_mask get_fs().seg | 105 | #define __access_mask get_fs().seg |
106 | 106 | ||
107 | #define __access_ok(addr, size, mask) \ | 107 | #define __access_ok(addr, size, mask) \ |
108 | (((signed long)((mask) & ((addr) | ((addr) + (size)) | __ua_size(size)))) == 0) | 108 | ({ \ |
109 | const volatile void __user *__up = addr; \ | ||
110 | unsigned long __addr = (unsigned long) __up; \ | ||
111 | unsigned long __size = size; \ | ||
112 | unsigned long __mask = mask; \ | ||
113 | unsigned long __ok; \ | ||
114 | \ | ||
115 | __ok = (signed long)(__mask & (__addr | (__addr + __size) | \ | ||
116 | __ua_size(__size))); \ | ||
117 | __ok == 0; \ | ||
118 | }) | ||
109 | 119 | ||
110 | #define access_ok(type, addr, size) \ | 120 | #define access_ok(type, addr, size) \ |
111 | likely(__access_ok((unsigned long)(addr), (size), __access_mask)) | 121 | likely(__access_ok((addr), (size), __access_mask)) |
112 | 122 | ||
113 | /* | 123 | /* |
114 | * put_user: - Write a simple value into user space. | 124 | * put_user: - Write a simple value into user space. |