[1/1] scsi : fnic : usign fnic_lock to gaurd fnic->state_flags

Commit Message

Satish Kharat Dec. 9, 2018, 4:38 p.m. UTC

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

Signed-off-by: Satish Kharat <[e-mail]>
---
 drivers/scsi/fnic/fnic_scsi.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

Patch

diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c
index 96acfcecd540..94186c4da091 100644
--- a/drivers/scsi/fnic/fnic_scsi.c
+++ b/drivers/scsi/fnic/fnic_scsi.c
@@ -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;
 }