linux-kernel - [PATCH v3] scsi: csiostor: convert sysfs snprintf to sysfs

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Message-Id: <20220901015130.419307-1-zhangxuezhi3@gmail.com>
Date:   Thu,  1 Sep 2022 09:51:30 +0800
From:   Xuezhi Zhang <zhangxuezhi3@...il.com>
To:     jejb@...ux.ibm.com, martin.petersen@...cle.com, bvanassche@....org,
        johannes.thumshirn@....com, himanshu.madhani@...cle.com,
        zhangxuezhi1@...lpad.com
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        zhangxuezhi3@...il.com
Subject: [PATCH v3] scsi: csiostor: convert sysfs snprintf to sysfs_emit

From: Xuezhi Zhang <zhangxuezhi1@...lpad.com>

Follow the advice of the Documentation/filesystems/sysfs.rst
and show() should only use sysfs_emit() or sysfs_emit_at()
when formatting the value to be returned to user space.

Signed-off-by: Xuezhi Zhang <zhangxuezhi1@...lpad.com>
---
v2: delete 'else' and extra space.
v3: delete extra configs in patch v2
    and use a new changelog.
---
 drivers/scsi/csiostor/csio_scsi.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/scsi/csiostor/csio_scsi.c b/drivers/scsi/csiostor/csio_scsi.c
index 9aafe0002ab1..05e1a63e00c3 100644
--- a/drivers/scsi/csiostor/csio_scsi.c
+++ b/drivers/scsi/csiostor/csio_scsi.c
@@ -1366,9 +1366,9 @@ csio_show_hw_state(struct device *dev,
 	struct csio_hw *hw = csio_lnode_to_hw(ln);
 
 	if (csio_is_hw_ready(hw))
-		return snprintf(buf, PAGE_SIZE, "ready\n");
-	else
-		return snprintf(buf, PAGE_SIZE, "not ready\n");
+		return sysfs_emit(buf, "ready\n");
+
+	return sysfs_emit(buf, "not ready\n");
 }
 
 /* Device reset */
@@ -1430,7 +1430,7 @@ csio_show_dbg_level(struct device *dev,
 {
 	struct csio_lnode *ln = shost_priv(class_to_shost(dev));
 
-	return snprintf(buf, PAGE_SIZE, "%x\n", ln->params.log_level);
+	return sysfs_emit(buf, "%x\n", ln->params.log_level);
 }
 
 /* Store debug level */
@@ -1476,7 +1476,7 @@ csio_show_num_reg_rnodes(struct device *dev,
 {
 	struct csio_lnode *ln = shost_priv(class_to_shost(dev));
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", ln->num_reg_rnodes);
+	return sysfs_emit(buf, "%d\n", ln->num_reg_rnodes);
 }
 
 static DEVICE_ATTR(num_reg_rnodes, S_IRUGO, csio_show_num_reg_rnodes, NULL);
-- 
2.25.1