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Commit 04a39523 authored by Russ Cox's avatar Russ Cox Committed by Linus Torvalds
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[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: default avatarRuss Cox <rsc@swtch.com>
Signed-off-by: default avatarJosh Triplett <josh@freedesktop.org>
Acked-by: default avatarChristopher Li <sparse@chrisli.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 00db779b

include/linux/compiler.h

+2 −2
Original line number Diff line number Diff line
@@ -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