linux-kernel - [PATCH] scsi: lpfc: use the normal helper to get the device

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Date:   Wed,  4 Nov 2020 17:43:57 +0800
From:   xiakaixu1987@...il.com
To:     james.smart@...adcom.com, dick.kennedy@...adcom.com,
        martin.petersen@...cle.com, jsmart2021@...il.com
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Kaixu Xia <kaixuxia@...cent.com>
Subject: [PATCH] scsi: lpfc: use the normal helper to get the device

From: Kaixu Xia <kaixuxia@...cent.com>

Here we could use the normal helper kobj_to_dev() to get the device
to simplify code.

Reported-by: Tosk Robot <tencent_os_robot@...cent.com>
Signed-off-by: Kaixu Xia <kaixuxia@...cent.com>
---
 drivers/scsi/lpfc/lpfc_attr.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index e94eac194676..779c7880481d 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -4380,8 +4380,7 @@ sysfs_drvr_stat_data_read(struct file *filp, struct kobject *kobj,
 		struct bin_attribute *bin_attr,
 		char *buf, loff_t off, size_t count)
 {
-	struct device *dev = container_of(kobj, struct device,
-		kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct Scsi_Host  *shost = class_to_shost(dev);
 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 	struct lpfc_hba   *phba = vport->phba;
@@ -6309,7 +6308,7 @@ sysfs_ctlreg_write(struct file *filp, struct kobject *kobj,
 		   char *buf, loff_t off, size_t count)
 {
 	size_t buf_off;
-	struct device *dev = container_of(kobj, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct Scsi_Host  *shost = class_to_shost(dev);
 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 	struct lpfc_hba   *phba = vport->phba;
@@ -6369,7 +6368,7 @@ sysfs_ctlreg_read(struct file *filp, struct kobject *kobj,
 {
 	size_t buf_off;
 	uint32_t * tmp_ptr;
-	struct device *dev = container_of(kobj, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct Scsi_Host  *shost = class_to_shost(dev);
 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 	struct lpfc_hba   *phba = vport->phba;
-- 
2.20.0