linux-kernel - [PATCH] scsi: qla2xxx: Re-use existing error handling path

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Message-Id: <6973844a1532ec2dc8e86f3533362e79d78ed774.1618132821.git.christophe.jaillet@wanadoo.fr>
Date:   Sun, 11 Apr 2021 11:21:40 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     njavali@...vell.com, GR-QLogic-Storage-Upstream@...vell.com,
        jejb@...ux.ibm.com, martin.petersen@...cle.com
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] scsi: qla2xxx: Re-use existing error handling path

There is no need to duplicate some code, use the existing error handling
path to free some resources.
This is more future-proof.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
The code above this hunk looks spurious to me.

It looks like an error handling path (i.e.
"if (response_len > bsg_job->reply_payload.payload_len)")
but returns 0, which is the initial value of 'ret'.

Shouldn't we have ret = -<something> here?
---
 drivers/scsi/qla2xxx/qla_bsg.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c
index aef2f7cc89d3..d42b2ad84049 100644
--- a/drivers/scsi/qla2xxx/qla_bsg.c
+++ b/drivers/scsi/qla2xxx/qla_bsg.c
@@ -2585,8 +2585,8 @@ qla2x00_get_host_stats(struct bsg_job *bsg_job)
 
 	data = kzalloc(response_len, GFP_KERNEL);
 	if (!data) {
-		kfree(req_data);
-		return -ENOMEM;
+		ret = -ENOMEM;
+		goto host_stat_out;
 	}
 
 	ret = qla2xxx_get_ini_stats(fc_bsg_to_shost(bsg_job), req_data->stat_type,
-- 
2.27.0