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[PATCH] s390: test_bit return value

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The test_bit function returns a non-boolean value, it returns 0,1,2,4,...
instead of only 0 or 1.  This causes wrongs results in the mincore system
call.  Check against 0 to get a proper boolean value.

Signed-off-by: Christian Borntraeger <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Christian Borntraeger 2005-11-07 00:59:07 -08:00 • committed by Linus Torvalds
commit 187dfc67b4
1 changed files with 2 additions and 2 deletions
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4
include/asm-s390/bitops.h
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@ -518,8 +518,8 @@ static inline int __test_bit(unsigned long nr, const volatile unsigned long *ptr
static inline int
__constant_test_bit(unsigned long nr, const volatile unsigned long *addr) {
return (((volatile char *) addr)
[(nr^(__BITOPS_WORDSIZE-8))>>3] & (1<<(nr&7)));
return ((((volatile char *) addr)
[(nr^(__BITOPS_WORDSIZE-8))>>3] & (1<<(nr&7)))) != 0;
}
#define test_bit(nr,addr) \