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| author | Gerald Schaefer <gerald.schaefer@de.ibm.com> | 2014-05-06 19:41:36 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-05-20 08:58:52 +0200 |
| commit | 2e4006b34d06681ed95d55510d4450f29a13c417 (patch) | |
| tree | 0ff439559cfcfc2bac5eb1b41d6412694fd49a03 /drivers/s390/cio/chsc.h | |
| parent | s390/appldata: add slab.h for kzalloc/kfree (diff) | |
| download | linux-2e4006b34d06681ed95d55510d4450f29a13c417.tar.xz linux-2e4006b34d06681ed95d55510d4450f29a13c417.zip | |
s390/spinlock: fix system hang with spin_retry <= 0
On LPAR, when spin_retry is set to <= 0, arch_spin_lock_wait() and
arch_spin_lock_wait_flags() may end up in a while(1) loop w/o doing
any compare and swap operation. To fix this, use do/while instead of
for loop.
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/chsc.h')
0 files changed, 0 insertions, 0 deletions