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scsi: fnic: use fnic_lock to guard fnic->state_flags

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Need to use fnic_lock as well as host lock in that order to set state
flags.

[mkp: typos]
Signed-off-by: Satish Kharat <satishkh@cisco.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Satish Kharat 2019-01-14 17:09:23 -08:00 committed by Martin K. Petersen
parent 5271d1cad8
commit 68f03bd1ee
1 changed files with 5 additions and 6 deletions
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11
drivers/scsi/fnic/fnic_scsi.c
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@ -180,20 +180,19 @@ void
__fnic_set_state_flags(struct fnic *fnic, unsigned long st_flags,
unsigned long clearbits)
{
struct Scsi_Host *host = fnic->lport->host;
int sh_locked = spin_is_locked(host->host_lock);
unsigned long flags = 0;
unsigned long host_lock_flags = 0;
if (!sh_locked)
spin_lock_irqsave(host->host_lock, flags);
spin_lock_irqsave(&fnic->fnic_lock, flags);
spin_lock_irqsave(fnic->lport->host->host_lock, host_lock_flags);
if (clearbits)
fnic->state_flags &= ~st_flags;
else
fnic->state_flags |= st_flags;
if (!sh_locked)
spin_unlock_irqrestore(host->host_lock, flags);
spin_unlock_irqrestore(fnic->lport->host->host_lock, host_lock_flags);
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
return;
}