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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2006-02-14 07:57:50 +0100
committerRalf Baechle <ralf@linux-mips.org>2006-02-21 17:58:22 +0100
commit8ecbbcaf08c13c57d6602472478739d64650ee0e (patch)
treec59cf7f91e45bf95f7e9b85f43d524f3cf627505 /include/asm-mips
parent[MIPS] Make integer overflow exceptions in kernel mode fatal. (diff)
downloadlinux-8ecbbcaf08c13c57d6602472478739d64650ee0e.tar.xz
linux-8ecbbcaf08c13c57d6602472478739d64650ee0e.zip
[MIPS] Fixes for uaccess.h with gcc >= 4.0.1
It seems current get_user() incorrectly sign-extend an unsigned int value on 64bit kernel. I think this is because '(__typeof__(val))' cast in final assignment. I suppose the cast should be '(__typeof__(*(addr))'. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'include/asm-mips')
-rw-r--r--include/asm-mips/uaccess.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/asm-mips/uaccess.h b/include/asm-mips/uaccess.h
index 7a553e9d44d3..b96f3e0f3933 100644
--- a/include/asm-mips/uaccess.h
+++ b/include/asm-mips/uaccess.h
@@ -233,7 +233,7 @@ do { \
#define __get_user_check(x,ptr,size) \
({ \
long __gu_err = -EFAULT; \
- const void __user * __gu_ptr = (ptr); \
+ const __typeof__(*(ptr)) __user * __gu_ptr = (ptr); \
\
if (likely(access_ok(VERIFY_READ, __gu_ptr, size))) \
__get_user_common((x), size, __gu_ptr); \
@@ -258,7 +258,7 @@ do { \
: "=r" (__gu_err), "=r" (__gu_tmp) \
: "0" (0), "o" (__m(addr)), "i" (-EFAULT)); \
\
- (val) = (__typeof__(val)) __gu_tmp; \
+ (val) = (__typeof__(*(addr))) __gu_tmp; \
}
/*
@@ -284,7 +284,7 @@ do { \
" .previous \n" \
: "=r" (__gu_err), "=&r" (__gu_tmp) \
: "0" (0), "r" (addr), "i" (-EFAULT)); \
- (val) = __gu_tmp; \
+ (val) = (__typeof__(*(addr))) __gu_tmp; \
}
/*