[PATCH] scsi: snic: Replace snprintf in show functions with sysfs_emit

[PATCH] scsi: snic: Replace snprintf in show functions with sysfs_emit

[cgel.zte]

From: Jing Yao <yao.jing2@zte.com.cn>

coccicheck complains about the use of snprintf() in sysfs show
functions:
WARNING use scnprintf or sprintf

Use sysfs_emit instead of scnprintf, snprintf or sprintf makes more
sense.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Jing Yao <yao.jing2@zte.com.cn>
---
 drivers/scsi/snic/snic_attrs.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/snic/snic_attrs.c b/drivers/scsi/snic/snic_attrs.c
index dc03ce1ec909..cb501be3e9ec 100644
--- a/drivers/scsi/snic/snic_attrs.c
+++ b/drivers/scsi/snic/snic_attrs.c
@@ -27,7 +27,7 @@ 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
@@ -37,7 +37,7 @@ snic_show_state(struct device *dev,
 {
 	struct snic *snic = shost_priv(class_to_shost(dev));
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
+	return sysfs_emit(buf, "%s\n",
 			snic_state_str[snic_get_state(snic)]);
 }
 
@@ -46,7 +46,7 @@ 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
@@ -59,7 +59,7 @@ 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",
+	return sysfs_emit(buf, "%s\n",
 			(snic->link_status) ? "Link Up" : "Link Down");
 }
 
-- 
2.25.1

Re: [PATCH] scsi: snic: Replace snprintf in show functions with sysfs_emit

[Joe Perches]

On Fri, 2021-11-05 at 08:14 +0000, cgel.zte@gmail.com wrote:
> From: Jing Yao <yao.jing2@zte.com.cn>
> 
> coccicheck complains about the use of snprintf() in sysfs show
> functions:
> WARNING use scnprintf or sprintf
> 
> Use sysfs_emit instead of scnprintf, snprintf or sprintf makes more
> sense.
[]
> diff --git a/drivers/scsi/snic/snic_attrs.c b/drivers/scsi/snic/snic_attrs.c
[]
> @@ -37,7 +37,7 @@ snic_show_state(struct device *dev,
>  {
>  	struct snic *snic = shost_priv(class_to_shost(dev));
>  
> -	return snprintf(buf, PAGE_SIZE, "%s\n",
> +	return sysfs_emit(buf, "%s\n",
>  			snic_state_str[snic_get_state(snic)]);
>  }

when you do these, please consider the ability to rewrap to 80 columns.

	return sysfs_emit(buf, "%s\n", snic_state_str[snic_get_state(snic)]);

> @@ -59,7 +59,7 @@ 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",
> +	return sysfs_emit(buf, "%s\n",
>  			(snic->link_status) ? "Link Up" : "Link Down");

And maintain parenthesis alignment

	return sysfs_emit(buf, "%s\n",
 			  snic->link_status ? "Link Up" : "Link Down");

or maybe

	return sysfs_emit(buf, "Link %s\n", snic->link_status ? "Up" : "Down");