linux-kernel - [PATCH v2 12/25] scsi: snic: Convert sprintf() family to sysfs

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Message-Id: <20240319063132.1588443-12-lizhijian@fujitsu.com>
Date: Tue, 19 Mar 2024 14:31:19 +0800
From: Li Zhijian <lizhijian@...itsu.com>
To: linux-kernel@...r.kernel.org
Cc: Li Zhijian <lizhijian@...itsu.com>,
	Karan Tilak Kumar <kartilak@...co.com>,
	Sesidhar Baddela <sebaddel@...co.com>,
	"James E.J. Bottomley" <jejb@...ux.ibm.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	linux-scsi@...r.kernel.org
Subject: [PATCH v2 12/25] scsi: snic: Convert sprintf() family to sysfs_emit() family

Per filesystems/sysfs.rst, show() should only use sysfs_emit()
or sysfs_emit_at() when formatting the value to be returned to user space.

coccinelle complains that there are still a couple of functions that use
snprintf(). Convert them to sysfs_emit().

sprintf() and scnprintf() will be converted as well if they have.

Generally, this patch is generated by
make coccicheck M=<path/to/file> MODE=patch \
COCCI=scripts/coccinelle/api/device_attr_show.cocci

No functional change intended

CC: Karan Tilak Kumar <kartilak@...co.com>
CC: Sesidhar Baddela <sebaddel@...co.com>
CC: "James E.J. Bottomley" <jejb@...ux.ibm.com>
CC: "Martin K. Petersen" <martin.petersen@...cle.com>
CC: linux-scsi@...r.kernel.org
Signed-off-by: Li Zhijian <lizhijian@...itsu.com>
---
This is a part of the work "Fix coccicheck device_attr_show warnings"[1]
Split them per subsystem so that the maintainer can review it easily
[1] https://lore.kernel.org/lkml/20240116041129.3937800-1-lizhijian@fujitsu.com/
---
 drivers/scsi/snic/snic_attrs.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/snic/snic_attrs.c b/drivers/scsi/snic/snic_attrs.c
index 3ddbdbc3ded1..48bf82d042b4 100644
--- a/drivers/scsi/snic/snic_attrs.c
+++ b/drivers/scsi/snic/snic_attrs.c
@@ -13,7 +13,7 @@ snic_show_sym_name(struct device *dev,
 {
 	struct snic *snic = shost_priv(class_to_shost(dev));
 
-	return snprintf(buf, PAGE_SIZE, "%s\n", snic->name);
+	return sysfs_emit(buf, "%s\n", snic->name);
 }
 
 static ssize_t
@@ -23,8 +23,7 @@ snic_show_state(struct device *dev,
 {
 	struct snic *snic = shost_priv(class_to_shost(dev));
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
-			snic_state_str[snic_get_state(snic)]);
+	return sysfs_emit(buf, "%s\n", snic_state_str[snic_get_state(snic)]);
 }
 
 static ssize_t
@@ -32,7 +31,7 @@ snic_show_drv_version(struct device *dev,
 		      struct device_attribute *attr,
 		      char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%s\n", SNIC_DRV_VERSION);
+	return sysfs_emit(buf, "%s\n", SNIC_DRV_VERSION);
 }
 
 static ssize_t
@@ -45,8 +44,8 @@ snic_show_link_state(struct device *dev,
 	if (snic->config.xpt_type == SNIC_DAS)
 		snic->link_status = svnic_dev_link_status(snic->vdev);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
-			(snic->link_status) ? "Link Up" : "Link Down");
+	return sysfs_emit(buf, "%s\n",
+			  (snic->link_status) ? "Link Up" : "Link Down");
 }
 
 static DEVICE_ATTR(snic_sym_name, S_IRUGO, snic_show_sym_name, NULL);
-- 
2.29.2