linux-kernel - [PATCH] scsi: lpfc: Add the missed misc_deregister() for lpfc

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Date:   Fri, 31 Jul 2020 14:56:39 +0800
From:   Jing Xiangfeng <jingxiangfeng@...wei.com>
To:     <james.smart@...adcom.com>, <dick.kennedy@...adcom.com>,
        <jejb@...ux.ibm.com>, <martin.petersen@...cle.com>
CC:     <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <jingxiangfeng@...wei.com>
Subject: [PATCH] scsi: lpfc: Add the missed misc_deregister() for lpfc_init()

lpfc_init() misses to call misc_deregister() in an error path. Add a
label 'unregister' to fix it.

Signed-off-by: Jing Xiangfeng <jingxiangfeng@...wei.com>
---
 drivers/scsi/lpfc/lpfc_init.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 6637f84a3d1b..ec40bc91e124 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -13982,17 +13982,18 @@ lpfc_init(void)
 		printk(KERN_ERR "Could not register lpfcmgmt device, "
 			"misc_register returned with status %d", error);
 
+	error = -ENOMEM;
 	lpfc_transport_functions.vport_create = lpfc_vport_create;
 	lpfc_transport_functions.vport_delete = lpfc_vport_delete;
 	lpfc_transport_template =
 				fc_attach_transport(&lpfc_transport_functions);
 	if (lpfc_transport_template == NULL)
-		return -ENOMEM;
+		goto unregister;
 	lpfc_vport_transport_template =
 		fc_attach_transport(&lpfc_vport_transport_functions);
 	if (lpfc_vport_transport_template == NULL) {
 		fc_release_transport(lpfc_transport_template);
-		return -ENOMEM;
+		goto unregister;
 	}
 	lpfc_nvme_cmd_template();
 	lpfc_nvmet_cmd_template();
@@ -14018,6 +14019,8 @@ lpfc_init(void)
 cpuhp_failure:
 	fc_release_transport(lpfc_transport_template);
 	fc_release_transport(lpfc_vport_transport_template);
+unregister:
+	misc_deregister(&lpfc_mgmt_dev);
 
 	return error;
 }
-- 
2.17.1