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scsi: elx: efct: Do not hold lock while calling fc_vport_terminate()

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Smatch checker reported the following error:

  drivers/base/power/sysfs.c:833 dpm_sysfs_remove()
  warn: sleeping in atomic context

With a calling sequence of:

  efct_lio_npiv_drop_nport() <- disables preempt
  -> fc_vport_terminate()
     -> device_del()
        -> dpm_sysfs_remove()

Issue is efct_lio_npiv_drop_nport() is making the fc_vport_terminate() call
while holding a lock w/ ipl raised.

It is unnecessary to hold the lock over this call, shift where the lock is
taken.

Link: https://lore.kernel.org/r/20210907165225.10821-1-jsmart2021@gmail.com
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Co-developed-by: Ram Vegesna <ram.vegesna@broadcom.com>
Signed-off-by: Ram Vegesna <ram.vegesna@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2021-09-07 09:52:25 -07:00 committed by Martin K. Petersen
parent ef7ae7f746
commit 450907424d
1 changed files with 2 additions and 2 deletions
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4
drivers/scsi/elx/efct/efct_lio.c
View File

@ -880,11 +880,11 @@ efct_lio_npiv_drop_nport(struct se_wwn *wwn)
struct efct *efct = lio_vport->efct;
unsigned long flags = 0;
spin_lock_irqsave(&efct->tgt_efct.efct_lio_lock, flags);
if (lio_vport->fc_vport)
fc_vport_terminate(lio_vport->fc_vport);
spin_lock_irqsave(&efct->tgt_efct.efct_lio_lock, flags);
list_for_each_entry_safe(vport, next_vport, &efct->tgt_efct.vport_list,
list_entry) {
if (vport->lio_vport == lio_vport) {