Commit 491af990 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky

s390/uaccess: fix access_ok compile warnings

On s390 access_ok is a macro which discards all parameters and always
returns 1. This can result in compile warnings which warn about unused
variables like this:

fs/read_write.c: In function 'rw_copy_check_uvector':
fs/read_write.c:684:16: warning: unused variable 'buf' [-Wunused-variable]

Fix this by adding a __range_ok() function which consumes all parameters
but still always returns 1.
Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 2e30db95
...@@ -50,10 +50,15 @@ ...@@ -50,10 +50,15 @@
#define segment_eq(a,b) ((a).ar4 == (b).ar4) #define segment_eq(a,b) ((a).ar4 == (b).ar4)
#define __access_ok(addr, size) \ static inline int __range_ok(unsigned long addr, unsigned long size)
({ \ {
__chk_user_ptr(addr); \ return 1;
1; \ }
#define __access_ok(addr, size) \
({ \
__chk_user_ptr(addr); \
__range_ok((unsigned long)(addr), (size)); \
}) })
#define access_ok(type, addr, size) __access_ok(addr, size) #define access_ok(type, addr, size) __access_ok(addr, size)
......
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