[V3,16/25] smartpqi: convert snprintf to scnprintf

Commit Message

Don Brace Dec. 10, 2020, 8:35 p.m. UTC

From: Kevin Barnett <[e-mail]>

The entire Linux kernel has been slowly migrating from snprintf
to scnprintf, so we are doing our part. This article explains
the rationale for this change:
    https: //lwn.net/Articles/69419/

Reviewed-by: Scott Benesh <[e-mail]>
Reviewed-by: Scott Teel <[e-mail]>
Signed-off-by: Kevin Barnett <[e-mail]>
Signed-off-by: Don Brace <[e-mail]>
---
 drivers/scsi/smartpqi/smartpqi_init.c |   23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

Comments

Martin Wilck Jan. 7, 2021, 11:51 p.m. UTC | #1

On Thu, 2020-12-10 at 14:35 -0600, Don Brace wrote:
> From: Kevin Barnett <[e-mail]>
> 
> The entire Linux kernel has been slowly migrating from snprintf
> to scnprintf, so we are doing our part. This article explains
> the rationale for this change:
>     https: //lwn.net/Articles/69419/
> 
> Reviewed-by: Scott Benesh <[e-mail]>
> Reviewed-by: Scott Teel <[e-mail]>
> Signed-off-by: Kevin Barnett <[e-mail]>
> Signed-off-by: Don Brace <[e-mail]>

AFAICS, none of the changed snprintf() invocations could possibly
overflow their target buffers, so this isn't necessary. Anyway, 

Reviewed-by: Martin Wilck <[e-mail]>

Patch

diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index 4e088f47d95f..456ea8732312 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -1750,7 +1750,7 @@  static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info,
 	ssize_t count;
 	char buffer[PQI_DEV_INFO_BUFFER_LENGTH];
 
-	count = snprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH,
+	count = scnprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH,
 		"%d:%d:", ctrl_info->scsi_host->host_no, device->bus);
 
 	if (device->target_lun_valid)
@@ -6405,14 +6405,13 @@  static ssize_t pqi_firmware_version_show(struct device *dev,
 	shost = class_to_shost(dev);
 	ctrl_info = shost_to_hba(shost);
 
-	return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->firmware_version);
+	return scnprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->firmware_version);
 }
 
 static ssize_t pqi_driver_version_show(struct device *dev,
 	struct device_attribute *attr, char *buffer)
 {
-	return snprintf(buffer, PAGE_SIZE, "%s\n",
-			DRIVER_VERSION BUILD_TIMESTAMP);
+	return scnprintf(buffer, PAGE_SIZE, "%s\n", DRIVER_VERSION BUILD_TIMESTAMP);
 }
 
 static ssize_t pqi_serial_number_show(struct device *dev,
@@ -6424,7 +6423,7 @@  static ssize_t pqi_serial_number_show(struct device *dev,
 	shost = class_to_shost(dev);
 	ctrl_info = shost_to_hba(shost);
 
-	return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->serial_number);
+	return scnprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->serial_number);
 }
 
 static ssize_t pqi_model_show(struct device *dev,
@@ -6436,7 +6435,7 @@  static ssize_t pqi_model_show(struct device *dev,
 	shost = class_to_shost(dev);
 	ctrl_info = shost_to_hba(shost);
 
-	return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->model);
+	return scnprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->model);
 }
 
 static ssize_t pqi_vendor_show(struct device *dev,
@@ -6448,7 +6447,7 @@  static ssize_t pqi_vendor_show(struct device *dev,
 	shost = class_to_shost(dev);
 	ctrl_info = shost_to_hba(shost);
 
-	return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->vendor);
+	return scnprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->vendor);
 }
 
 static ssize_t pqi_host_rescan_store(struct device *dev,
@@ -6642,7 +6641,7 @@  static ssize_t pqi_unique_id_show(struct device *dev,
 
 	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 
-	return snprintf(buffer, PAGE_SIZE,
+	return scnprintf(buffer, PAGE_SIZE,
 		"%02X%02X%02X%02X%02X%02X%02X%02X"
 		"%02X%02X%02X%02X%02X%02X%02X%02X\n",
 		unique_id[0], unique_id[1], unique_id[2], unique_id[3],
@@ -6675,7 +6674,7 @@  static ssize_t pqi_lunid_show(struct device *dev,
 
 	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 
-	return snprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid);
+	return scnprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid);
 }
 
 #define MAX_PATHS	8
@@ -6787,7 +6786,7 @@  static ssize_t pqi_sas_address_show(struct device *dev,
 
 	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 
-	return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address);
+	return scnprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address);
 }
 
 static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev,
@@ -6845,7 +6844,7 @@  static ssize_t pqi_raid_level_show(struct device *dev,
 
 	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 
-	return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
+	return scnprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
 }
 
 static ssize_t pqi_raid_bypass_cnt_show(struct device *dev,
@@ -6872,7 +6871,7 @@  static ssize_t pqi_raid_bypass_cnt_show(struct device *dev,
 
 	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 
-	return snprintf(buffer, PAGE_SIZE, "0x%x\n", raid_bypass_cnt);
+	return scnprintf(buffer, PAGE_SIZE, "0x%x\n", raid_bypass_cnt);
 }
 
 static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL);