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Heiko Carstens 2ba121ced9 s390/spinlock: avoid yield to non existent cpu ... commit 8497695243 upstream. arch_spin_lock_wait_flags() checks if a spinlock is not held before trying a compare and swap instruction. If the lock is unlocked it tries the compare and swap instruction, however if a different cpu grabbed the lock in the meantime the instruction will fail as expected. Subsequently the arch_spin_lock_wait_flags() incorrectly tries to figure out if the cpu that holds the lock is running. However it is using the wrong cpu number for this (-1) and then will also yield the current cpu to the wrong cpu. Fix this by adding a missing continue statement. Fixes: 470ada6b1a ("s390/spinlock: refactor arch_spin_lock_wait[_flags]") Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>		History 2016-06-15 21:29:24 +01:00
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delay.c	s390/time: correct use of store clock fast	2013-10-22 09:16:40 +02:00
div64.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
find.c	s390/bitops: fix comment	2014-02-21 08:50:20 +01:00
Makefile	s390/uaccess: rework uaccess code - fix locking issues	2014-04-03 14:31:04 +02:00
mem32.S	s390/string: provide asm lib functions for memcpy and memcmp	2012-09-26 15:44:50 +02:00
mem64.S	s390/string: provide asm lib functions for memcpy and memcmp	2012-09-26 15:44:50 +02:00
qrnnd.S	[S390] fix s390 assembler code alignments	2011-07-24 10:48:21 +02:00
spinlock.c	s390/spinlock: avoid yield to non existent cpu	2016-06-15 21:29:24 +01:00
string.c	s390/string: provide asm lib functions for memcpy and memcmp	2012-09-26 15:44:50 +02:00
uaccess.c	s390/uaccess: simplify control register updates	2014-05-20 08:58:46 +02:00
ucmpdi2.c	[S390] add __ucmpdi2() helper function	2009-07-07 16:37:53 +02:00