[PATCH 02/22] be2iscsi: Fix the MCCQ count leakage

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 When MBX CMD is posted in MCCQ and if command times out,during
 mccq resource cleanup for the timed out command  mccq->count
 was not decremented. The led to BUG_ON being hit.

Signed-off-by: John Soni Jose <sony.john-n@xxxxxxxxxx>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@xxxxxxxxxx>
---
 drivers/scsi/be2iscsi/be_cmds.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/be2iscsi/be_cmds.c b/drivers/scsi/be2iscsi/be_cmds.c
index bb70dcb..f7788e5 100644
--- a/drivers/scsi/be2iscsi/be_cmds.c
+++ b/drivers/scsi/be2iscsi/be_cmds.c
@@ -174,6 +174,10 @@ int beiscsi_mccq_compl(struct beiscsi_hba *phba,
 			    BEISCSI_LOG_CONFIG,
 			    "BC_%d : MBX Cmd Completion timed out\n");
 		rc = -EAGAIN;
+
+		/* decrement the mccq used count */
+		atomic_dec(&phba->ctrl.mcc_obj.q.used);
+
 		goto release_mcc_tag;
 	} else
 		rc = 0;
@@ -699,7 +703,7 @@ struct be_mcc_wrb *wrb_from_mccq(struct beiscsi_hba *phba)
 	struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
 	struct be_mcc_wrb *wrb;
 
-	BUG_ON(atomic_read(&mccq->used) >= mccq->len);
+	WARN_ON(atomic_read(&mccq->used) >= mccq->len);
 	wrb = queue_head_node(mccq);
 	memset(wrb, 0, sizeof(*wrb));
 	wrb->tag0 = (mccq->head & 0x000000FF) << 16;
-- 
1.7.10.4

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