提交 04a39523 编写于 作者: R Russ Cox 提交者: Linus Torvalds

[PATCH] Add const to pointer qualifiers for __chk_user_ptr and __chk_io_ptr.

Change prototypes for __chk_user_ptr and __chk_io_ptr to take const
void* instead of void*, so that code can pass "const void *" to them.

(Right now sparse does not warn about passing const void* to void*
functions, but that is a separate bug that I believe Josh is working on,
and once sparse does check this, the changed prototypes will be
necessary.)
Signed-off-by: NRuss Cox <rsc@swtch.com>
Signed-off-by: NJosh Triplett <josh@freedesktop.org>
Acked-by: NChristopher Li <sparse@chrisli.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 00db779b
......@@ -15,8 +15,8 @@
# define __acquire(x) __context__(x,1)
# define __release(x) __context__(x,-1)
# define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0)
extern void __chk_user_ptr(void __user *);
extern void __chk_io_ptr(void __iomem *);
extern void __chk_user_ptr(const void __user *);
extern void __chk_io_ptr(const void __iomem *);
#else
# define __user
# define __kernel
......
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