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author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2009-03-26 15:24:09 +0100 |
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committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-03-26 15:24:13 +0100 |
commit | 98c1c6825247c71e3d8a9a5439ba21fce7563014 (patch) | |
tree | 6e2311aff5eefba2aaad2f09b1c11b7b2b0eceae /drivers/serial/sa1100.c | |
parent | e74fe0cec92439115630b51195444b89b910800a (diff) |
[S390] cio/crw: add/fix locking
The crw_unregister_handler uses xchg + synchronize_sched when
unregistering a crw_handler.
This doesn't protect crw_collect_info to potentially jump to NULL since
it has unlocked code like this:
if (crw_handlers[i])
crw_handlers[i](NULL, NULL, 1);
So add a mutex which protects the crw handler array for changes.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/serial/sa1100.c')
0 files changed, 0 insertions, 0 deletions