[S390] atomic: implement atomic64_dec_if_positive
authorHeiko Carstens <heiko.carstens@de.ibm.com>
Wed, 26 May 2010 21:26:18 +0000 (23:26 +0200)
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>
Wed, 26 May 2010 21:26:29 +0000 (23:26 +0200)
commit2ddb3ec41495c2f4535d1e72e21e25870117f848
treeb8625f5b0b56ca212382cd3f7ea8b62e877061ec
parent1ef6acf597559fd1c244190512144c40619299bf
[S390] atomic: implement atomic64_dec_if_positive

Implement atomic64_dec_if_positive and add missing system.h header
include.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/include/asm/atomic.h