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* [PATCH] scsi: ibmvfc: replace snprintf with sysfs_emit
@ 2021-11-30  0:06 davidcomponentone
  0 siblings, 0 replies; 4+ messages in thread
From: davidcomponentone @ 2021-11-30  0:06 UTC (permalink / raw)
  To: tyreld
  Cc: linux-scsi, martin.petersen, jejb, davidcomponentone,
	linux-kernel, Yang Guang, paulus, linuxppc-dev, Zeal Robot

From: Yang Guang <yang.guang5@zte.com.cn>

coccinelle report:
./drivers/scsi/ibmvscsi/ibmvfc.c:3453:8-16:
WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3416:8-16:
WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3436:8-16:
WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3426:8-16:
WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3445:8-16:
WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3406:8-16:
WARNING: use scnprintf or sprintf

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Yang Guang <yang.guang5@zte.com.cn>
---
 drivers/scsi/ibmvscsi/ibmvfc.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index d0eab5700dc5..69bf55c037a5 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -3403,7 +3403,7 @@ static ssize_t ibmvfc_show_host_partition_name(struct device *dev,
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct ibmvfc_host *vhost = shost_priv(shost);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
+	return sysfs_emit(buf, "%s\n",
 			vhost->login_buf->resp.partition_name);
 }
 
@@ -3413,7 +3413,7 @@ static ssize_t ibmvfc_show_host_device_name(struct device *dev,
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct ibmvfc_host *vhost = shost_priv(shost);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
+	return sysfs_emit(buf, "%s\n",
 			vhost->login_buf->resp.device_name);
 }
 
@@ -3423,7 +3423,7 @@ static ssize_t ibmvfc_show_host_loc_code(struct device *dev,
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct ibmvfc_host *vhost = shost_priv(shost);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
+	return sysfs_emit(buf, "%s\n",
 			vhost->login_buf->resp.port_loc_code);
 }
 
@@ -3433,7 +3433,7 @@ static ssize_t ibmvfc_show_host_drc_name(struct device *dev,
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct ibmvfc_host *vhost = shost_priv(shost);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
+	return sysfs_emit(buf, "%s\n",
 			vhost->login_buf->resp.drc_name);
 }
 
@@ -3442,7 +3442,7 @@ static ssize_t ibmvfc_show_host_npiv_version(struct device *dev,
 {
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct ibmvfc_host *vhost = shost_priv(shost);
-	return snprintf(buf, PAGE_SIZE, "%d\n", be32_to_cpu(vhost->login_buf->resp.version));
+	return sysfs_emit(buf, "%d\n", be32_to_cpu(vhost->login_buf->resp.version));
 }
 
 static ssize_t ibmvfc_show_host_capabilities(struct device *dev,
@@ -3450,7 +3450,7 @@ static ssize_t ibmvfc_show_host_capabilities(struct device *dev,
 {
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct ibmvfc_host *vhost = shost_priv(shost);
-	return snprintf(buf, PAGE_SIZE, "%llx\n", be64_to_cpu(vhost->login_buf->resp.capabilities));
+	return sysfs_emit(buf, "%llx\n", be64_to_cpu(vhost->login_buf->resp.capabilities));
 }
 
 /**
-- 
2.30.2


^ permalink raw reply related	[flat|nested] 4+ messages in thread
* Re: [PATCH] scsi: ibmvfc: replace snprintf with sysfs_emit
  2022-02-09  0:43 davidcomponentone
  2022-02-09  2:06 ` Joe Perches
@ 2022-02-09  2:40 ` Damien Le Moal
  1 sibling, 0 replies; 4+ messages in thread
From: Damien Le Moal @ 2022-02-09  2:40 UTC (permalink / raw)
  To: davidcomponentone, tyreld
  Cc: martin.petersen, linux-scsi, jejb, linux-kernel, Yang Guang,
	paulus, linuxppc-dev, Zeal Robot

On 2/9/22 09:43, davidcomponentone@gmail.com wrote:
> From: Yang Guang <yang.guang5@zte.com.cn>
> 
> coccinelle report:
> ./drivers/scsi/ibmvscsi/ibmvfc.c:3453:8-16:
> WARNING: use scnprintf or sprintf
> ./drivers/scsi/ibmvscsi/ibmvfc.c:3416:8-16:
> WARNING: use scnprintf or sprintf
> ./drivers/scsi/ibmvscsi/ibmvfc.c:3436:8-16:
> WARNING: use scnprintf or sprintf
> ./drivers/scsi/ibmvscsi/ibmvfc.c:3426:8-16:
> WARNING: use scnprintf or sprintf
> ./drivers/scsi/ibmvscsi/ibmvfc.c:3445:8-16:
> WARNING: use scnprintf or sprintf
> ./drivers/scsi/ibmvscsi/ibmvfc.c:3406:8-16:
> WARNING: use scnprintf or sprintf
> 
> Use sysfs_emit instead of scnprintf or sprintf makes more sense.
> 
> Reported-by: Zeal Robot <zealci@zte.com.cn>
> Signed-off-by: Yang Guang <yang.guang5@zte.com.cn>
> Signed-off-by: David Yang <davidcomponentone@gmail.com>
> ---
>  drivers/scsi/ibmvscsi/ibmvfc.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
> index d0eab5700dc5..d5a197d17e0a 100644
> --- a/drivers/scsi/ibmvscsi/ibmvfc.c
> +++ b/drivers/scsi/ibmvscsi/ibmvfc.c
> @@ -3403,7 +3403,7 @@ static ssize_t ibmvfc_show_host_partition_name(struct device *dev,
>  	struct Scsi_Host *shost = class_to_shost(dev);
>  	struct ibmvfc_host *vhost = shost_priv(shost);
>  
> -	return snprintf(buf, PAGE_SIZE, "%s\n",
> +	return sysfs_emit(buf, "%s\n",
>  			vhost->login_buf->resp.partition_name);
>  }
>  
> @@ -3413,7 +3413,7 @@ static ssize_t ibmvfc_show_host_device_name(struct device *dev,
>  	struct Scsi_Host *shost = class_to_shost(dev);
>  	struct ibmvfc_host *vhost = shost_priv(shost);
>  
> -	return snprintf(buf, PAGE_SIZE, "%s\n",
> +	return sysfs_emit(buf, "%s\n",
>  			vhost->login_buf->resp.device_name);
>  }
>  
> @@ -3423,7 +3423,7 @@ static ssize_t ibmvfc_show_host_loc_code(struct device *dev,
>  	struct Scsi_Host *shost = class_to_shost(dev);
>  	struct ibmvfc_host *vhost = shost_priv(shost);
>  
> -	return snprintf(buf, PAGE_SIZE, "%s\n",
> +	return sysfs_emit(buf, "%s\n",
>  			vhost->login_buf->resp.port_loc_code);
>  }
>  
> @@ -3433,7 +3433,7 @@ static ssize_t ibmvfc_show_host_drc_name(struct device *dev,
>  	struct Scsi_Host *shost = class_to_shost(dev);
>  	struct ibmvfc_host *vhost = shost_priv(shost);
>  
> -	return snprintf(buf, PAGE_SIZE, "%s\n",
> +	return sysfs_emit(buf, "%s\n",
>  			vhost->login_buf->resp.drc_name);
>  }
>  
> @@ -3442,7 +3442,7 @@ static ssize_t ibmvfc_show_host_npiv_version(struct device *dev,
>  {
>  	struct Scsi_Host *shost = class_to_shost(dev);
>  	struct ibmvfc_host *vhost = shost_priv(shost);
> -	return snprintf(buf, PAGE_SIZE, "%d\n", be32_to_cpu(vhost->login_buf->resp.version));
> +	return sysfs_emit(buf, "%d\n", be32_to_cpu(vhost->login_buf->resp.version));

The format should be %u, not %d. And while at it, please add a blank
line after the declarations.

>  }
>  
>  static ssize_t ibmvfc_show_host_capabilities(struct device *dev,
> @@ -3450,7 +3450,7 @@ static ssize_t ibmvfc_show_host_capabilities(struct device *dev,
>  {
>  	struct Scsi_Host *shost = class_to_shost(dev);
>  	struct ibmvfc_host *vhost = shost_priv(shost);
> -	return snprintf(buf, PAGE_SIZE, "%llx\n", be64_to_cpu(vhost->login_buf->resp.capabilities));
> +	return sysfs_emit(buf, "%llx\n", be64_to_cpu(vhost->login_buf->resp.capabilities));
>  }

Ditto for the blank line.

>  
>  /**
> @@ -3471,7 +3471,7 @@ static ssize_t ibmvfc_show_log_level(struct device *dev,
>  	int len;
>  
>  	spin_lock_irqsave(shost->host_lock, flags);
> -	len = snprintf(buf, PAGE_SIZE, "%d\n", vhost->log_level);
> +	len = sysfs_emit(buf, "%d\n", vhost->log_level);
>  	spin_unlock_irqrestore(shost->host_lock, flags);
>  	return len;
>  }
> @@ -3509,7 +3509,7 @@ static ssize_t ibmvfc_show_scsi_channels(struct device *dev,
>  	int len;
>  
>  	spin_lock_irqsave(shost->host_lock, flags);
> -	len = snprintf(buf, PAGE_SIZE, "%d\n", vhost->client_scsi_channels);
> +	len = sysfs_emit(buf, "%d\n", vhost->client_scsi_channels);
>  	spin_unlock_irqrestore(shost->host_lock, flags);
>  	return len;
>  }


-- 
Damien Le Moal
Western Digital Research

^ permalink raw reply	[flat|nested] 4+ messages in thread
* Re: [PATCH] scsi: ibmvfc: replace snprintf with sysfs_emit
  2022-02-09  0:43 davidcomponentone
@ 2022-02-09  2:06 ` Joe Perches
  2022-02-09  2:40 ` Damien Le Moal
  1 sibling, 0 replies; 4+ messages in thread
From: Joe Perches @ 2022-02-09  2:06 UTC (permalink / raw)
  To: davidcomponentone, tyreld
  Cc: martin.petersen, linux-scsi, jejb, linux-kernel, Yang Guang,
	paulus, linuxppc-dev, Zeal Robot

On Wed, 2022-02-09 at 08:43 +0800, davidcomponentone@gmail.com wrote:
> From: Yang Guang <yang.guang5@zte.com.cn>
[]
> diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
[]
> @@ -3403,7 +3403,7 @@ static ssize_t ibmvfc_show_host_partition_name(struct device *dev,
>  	struct Scsi_Host *shost = class_to_shost(dev);
>  	struct ibmvfc_host *vhost = shost_priv(shost);
>  
> -	return snprintf(buf, PAGE_SIZE, "%s\n",
> +	return sysfs_emit(buf, "%s\n",
>  			vhost->login_buf->resp.partition_name);

Rewrap please

	return sysfs_emit(buf, "%s\n", vhost->login_buf->resp.partition_name);

>  }
>  
> @@ -3413,7 +3413,7 @@ static ssize_t ibmvfc_show_host_device_name(struct device *dev,
>  	struct Scsi_Host *shost = class_to_shost(dev);
>  	struct ibmvfc_host *vhost = shost_priv(shost);
>  
> -	return snprintf(buf, PAGE_SIZE, "%s\n",
> +	return sysfs_emit(buf, "%s\n",
>  			vhost->login_buf->resp.device_name);

etc...



^ permalink raw reply	[flat|nested] 4+ messages in thread
* [PATCH] scsi: ibmvfc: replace snprintf with sysfs_emit
@ 2022-02-09  0:43 davidcomponentone
  2022-02-09  2:06 ` Joe Perches
  2022-02-09  2:40 ` Damien Le Moal
  0 siblings, 2 replies; 4+ messages in thread
From: davidcomponentone @ 2022-02-09  0:43 UTC (permalink / raw)
  To: tyreld
  Cc: linux-scsi, martin.petersen, jejb, davidcomponentone,
	linux-kernel, Yang Guang, paulus, linuxppc-dev, Zeal Robot

From: Yang Guang <yang.guang5@zte.com.cn>

coccinelle report:
./drivers/scsi/ibmvscsi/ibmvfc.c:3453:8-16:
WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3416:8-16:
WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3436:8-16:
WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3426:8-16:
WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3445:8-16:
WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3406:8-16:
WARNING: use scnprintf or sprintf

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Yang Guang <yang.guang5@zte.com.cn>
Signed-off-by: David Yang <davidcomponentone@gmail.com>
---
 drivers/scsi/ibmvscsi/ibmvfc.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index d0eab5700dc5..d5a197d17e0a 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -3403,7 +3403,7 @@ static ssize_t ibmvfc_show_host_partition_name(struct device *dev,
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct ibmvfc_host *vhost = shost_priv(shost);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
+	return sysfs_emit(buf, "%s\n",
 			vhost->login_buf->resp.partition_name);
 }
 
@@ -3413,7 +3413,7 @@ static ssize_t ibmvfc_show_host_device_name(struct device *dev,
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct ibmvfc_host *vhost = shost_priv(shost);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
+	return sysfs_emit(buf, "%s\n",
 			vhost->login_buf->resp.device_name);
 }
 
@@ -3423,7 +3423,7 @@ static ssize_t ibmvfc_show_host_loc_code(struct device *dev,
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct ibmvfc_host *vhost = shost_priv(shost);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
+	return sysfs_emit(buf, "%s\n",
 			vhost->login_buf->resp.port_loc_code);
 }
 
@@ -3433,7 +3433,7 @@ static ssize_t ibmvfc_show_host_drc_name(struct device *dev,
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct ibmvfc_host *vhost = shost_priv(shost);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
+	return sysfs_emit(buf, "%s\n",
 			vhost->login_buf->resp.drc_name);
 }
 
@@ -3442,7 +3442,7 @@ static ssize_t ibmvfc_show_host_npiv_version(struct device *dev,
 {
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct ibmvfc_host *vhost = shost_priv(shost);
-	return snprintf(buf, PAGE_SIZE, "%d\n", be32_to_cpu(vhost->login_buf->resp.version));
+	return sysfs_emit(buf, "%d\n", be32_to_cpu(vhost->login_buf->resp.version));
 }
 
 static ssize_t ibmvfc_show_host_capabilities(struct device *dev,
@@ -3450,7 +3450,7 @@ static ssize_t ibmvfc_show_host_capabilities(struct device *dev,
 {
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct ibmvfc_host *vhost = shost_priv(shost);
-	return snprintf(buf, PAGE_SIZE, "%llx\n", be64_to_cpu(vhost->login_buf->resp.capabilities));
+	return sysfs_emit(buf, "%llx\n", be64_to_cpu(vhost->login_buf->resp.capabilities));
 }
 
 /**
@@ -3471,7 +3471,7 @@ static ssize_t ibmvfc_show_log_level(struct device *dev,
 	int len;
 
 	spin_lock_irqsave(shost->host_lock, flags);
-	len = snprintf(buf, PAGE_SIZE, "%d\n", vhost->log_level);
+	len = sysfs_emit(buf, "%d\n", vhost->log_level);
 	spin_unlock_irqrestore(shost->host_lock, flags);
 	return len;
 }
@@ -3509,7 +3509,7 @@ static ssize_t ibmvfc_show_scsi_channels(struct device *dev,
 	int len;
 
 	spin_lock_irqsave(shost->host_lock, flags);
-	len = snprintf(buf, PAGE_SIZE, "%d\n", vhost->client_scsi_channels);
+	len = sysfs_emit(buf, "%d\n", vhost->client_scsi_channels);
 	spin_unlock_irqrestore(shost->host_lock, flags);
 	return len;
 }
-- 
2.30.2


^ permalink raw reply related	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-02-09  2:42 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-11-30  0:06 [PATCH] scsi: ibmvfc: replace snprintf with sysfs_emit davidcomponentone
2022-02-09  0:43 davidcomponentone
2022-02-09  2:06 ` Joe Perches
2022-02-09  2:40 ` Damien Le Moal

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