linux-kernel - [PATCH V3 2/2] scsi: qla2xxx: Optimisation of exception handling in qla24xx_els_dcmd

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Date: Tue, 30 Apr 2024 17:11:44 +0800
From: Yongzhi Liu <hyperlyzcs@...il.com>
To: skashyap@...vell.com,
	Markus.Elfring@....de,
	njavali@...vell.com,
	martin.petersen@...cle.com,
	James.Bottomley@...senPartnership.com
Cc: himanshu.madhani@...cle.com,
	GR-QLogic-Storage-Upstream@...vell.com,
	linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	jitxie@...cent.com,
	huntazhang@...cent.com,
	Yongzhi Liu <hyperlyzcs@...il.com>
Subject: [PATCH V3 2/2] scsi: qla2xxx: Optimisation of exception handling in qla24xx_els_dcmd_iocb

To avoid duplicate error handling code a bit more, use more common goto
chain in qla24xx_els_dcmd_iocb.

Signed-off-by: Yongzhi Liu <hyperlyzcs@...il.com>
---
V2 -> V3: Improve patch summary and provide a patch serises with two separate update steps
V1 -> V2: Optimisation of exception handling

 drivers/scsi/qla2xxx/qla_iocb.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index faec66bd1951..a3a3904cbb47 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -2749,9 +2749,8 @@ qla24xx_els_dcmd_iocb(scsi_qla_host_t *vha, int els_opcode,
 			    GFP_KERNEL);
 
 	if (!elsio->u.els_logo.els_logo_pyld) {
-		/* ref: INIT */
-		kref_put(&sp->cmd_kref, qla2x00_sp_release);
-		return QLA_FUNCTION_FAILED;
+		rval = QLA_FUNCTION_FAILED;
+		goto put_ref;
 	}
 
 	memset(&logo_pyld, 0, sizeof(struct els_logo_payload));
@@ -2773,9 +2772,8 @@ qla24xx_els_dcmd_iocb(scsi_qla_host_t *vha, int els_opcode,
 
 	rval = qla2x00_start_sp(sp);
 	if (rval != QLA_SUCCESS) {
-		/* ref: INIT */
-		kref_put(&sp->cmd_kref, qla2x00_sp_release);
-		return QLA_FUNCTION_FAILED;
+		rval = QLA_FUNCTION_FAILED;
+		goto put_ref;
 	}
 
 	ql_dbg(ql_dbg_io, vha, 0x3074,
@@ -2784,7 +2782,7 @@ qla24xx_els_dcmd_iocb(scsi_qla_host_t *vha, int els_opcode,
 	    fcport->d_id.b.area, fcport->d_id.b.al_pa);
 
 	wait_for_completion(&elsio->u.els_logo.comp);
-
+put_ref:
 	/* ref: INIT */
 	kref_put(&sp->cmd_kref, qla2x00_sp_release);
 	return rval;
-- 
2.36.1