s390/bitops: add test_and_clear_bit_inv()

Web:        https://git.kernel.org/torvalds/c/f3ec471a9832f8365836d70db4d52db9cc4dd6b1
Commit:     f3ec471a9832f8365836d70db4d52db9cc4dd6b1
Parent:     19114beb73f774e466d9e39b8e8b961812c9f881
Refname:    refs/heads/master
Author:     Jens Freimann <[email protected]>
AuthorDate: Thu Mar 16 17:45:40 2017 +0100
Committer:  Christian Borntraeger <[email protected]>
CommitDate: Fri Jan 26 10:47:38 2018 +0100

    s390/bitops: add test_and_clear_bit_inv()
    
    This patch adds a MSB0 bit numbering version of test_and_clear_bit().
    
    Signed-off-by: Jens Freimann <[email protected]>
    Signed-off-by: Michael Mueller <[email protected]>
    Reviewed-by: Pierre Morel <[email protected]>
    Reviewed-by: Halil Pasic <[email protected]>
    Reviewed-by: Christian Borntraeger <[email protected]>
    Reviewed-by: David Hildenbrand <[email protected]>
    Reviewed-by: Cornelia Huck <[email protected]>
    Acked-by: Martin Schwidefsky <[email protected]>
    Signed-off-by: Christian Borntraeger <[email protected]>
---
 arch/s390/include/asm/bitops.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h
index 31e400c1a1f3..86e5b2fdee3c 100644
--- a/arch/s390/include/asm/bitops.h
+++ b/arch/s390/include/asm/bitops.h
@@ -261,6 +261,11 @@ static inline void clear_bit_inv(unsigned long nr, volatile unsigned long *ptr)
 	return clear_bit(nr ^ (BITS_PER_LONG - 1), ptr);
 }
 
+static inline int test_and_clear_bit_inv(unsigned long nr, volatile unsigned long *ptr)
+{
+	return test_and_clear_bit(nr ^ (BITS_PER_LONG - 1), ptr);
+}
+
 static inline void __set_bit_inv(unsigned long nr, volatile unsigned long *ptr)
 {
 	return __set_bit(nr ^ (BITS_PER_LONG - 1), ptr);
--
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