diff options
| author | James Smart <[email protected]> | 2018-09-10 10:30:46 -0700 |
|---|---|---|
| committer | Martin K. Petersen <[email protected]> | 2018-09-11 20:37:33 -0400 |
| commit | 523128e53b1e82a7eb422168eddd0c566973520d (patch) | |
| tree | 919c6490bfb70ba9f8b91db59827c215a3691249 /tools/perf/scripts/python | |
| parent | 0ef01a2d95fd62bb4f536e7ce4d5e8e74b97a244 (diff) | |
scsi: lpfc: Correct irq handling via locks when taking adapter offline
When taking the board offline while performing i/o, unsafe locking errors
occurred and irq level isn't properly managed.
In lpfc_sli_hba_down, spin_lock_irqsave(&phba->hbalock, flags) does not
disable softirqs raised from timer expiry. It is possible that a softirq is
raised from the lpfc_els_retry_delay routine and recursively requests the same
phba->hbalock spinlock causing deadlock.
Address the deadlocks by creating a new port_list lock. The softirq behavior
can then be managed a level deeper into the calling sequences.
Signed-off-by: Dick Kennedy <[email protected]>
Signed-off-by: James Smart <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions