[PATCH 1/6] lpfc: Fix WQ|CQ|EQ resource check

[Justin Tee <justintee8345@gmail.com>]

Adapter configurations with limited EQ resources may fail to initialize.

Firmware resources are queried in lpfc_sli4_read_config().  The driver
parameters cfg_irq_chann and cfg_hdw_queue are adjusted from defaults if
constrained by firmware resources.

The minimum resource check includes a special allocation for queues such
as ELS, MBOX, NVME LS. However the additional reservation was also
incorrectly applied to EQ resources.

Reordered WQ|CQ|EQ resource checks to apply the special allocation
adjustment to WQ and CQ resources only.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
---
 drivers/scsi/lpfc/lpfc_init.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index b49c39569386..a6e32ecd4151 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -10092,17 +10092,15 @@ lpfc_sli4_read_config(struct lpfc_hba *phba)
 		qmin = phba->sli4_hba.max_cfg_param.max_wq;
 		if (phba->sli4_hba.max_cfg_param.max_cq < qmin)
 			qmin = phba->sli4_hba.max_cfg_param.max_cq;
-		if (phba->sli4_hba.max_cfg_param.max_eq < qmin)
-			qmin = phba->sli4_hba.max_cfg_param.max_eq;
 		/*
-		 * Whats left after this can go toward NVME / FCP.
-		 * The minus 4 accounts for ELS, NVME LS, MBOX
-		 * plus one extra. When configured for
-		 * NVMET, FCP io channel WQs are not created.
+		 * Reserve 4 (ELS, NVME LS, MBOX, plus one extra) and
+		 * the remainder can be used for NVME / FCP.
 		 */
 		qmin -= 4;
+		if (phba->sli4_hba.max_cfg_param.max_eq < qmin)
+			qmin = phba->sli4_hba.max_cfg_param.max_eq;
 
-		/* Check to see if there is enough for NVME */
+		/* Check to see if there is enough for default cfg */
 		if ((phba->cfg_irq_chann > qmin) ||
 		    (phba->cfg_hdw_queue > qmin)) {
 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
-- 
2.38.0