diff mbox series

[25/42] drivers/scsi/ibmvscsi: Convert snprintf to sysfs_emit

Message ID 20240116045151.3940401-23-lizhijian@fujitsu.com (mailing list archive)
State Accepted
Headers show
Series Fix coccicheck warnings | expand

Commit Message

Zhijian Li (Fujitsu) Jan. 16, 2024, 4:51 a.m. UTC 
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().

> ./drivers/scsi/ibmvscsi/ibmvfc.c:3483:8-16: WARNING: please use sysfs_emit
> ./drivers/scsi/ibmvscsi/ibmvfc.c:3493:8-16: WARNING: please use sysfs_emit
> ./drivers/scsi/ibmvscsi/ibmvfc.c:3503:8-16: WARNING: please use sysfs_emit
> ./drivers/scsi/ibmvscsi/ibmvfc.c:3513:8-16: WARNING: please use sysfs_emit
> ./drivers/scsi/ibmvscsi/ibmvfc.c:3522:8-16: WARNING: please use sysfs_emit
> ./drivers/scsi/ibmvscsi/ibmvfc.c:3530:8-16: WARNING: please use sysfs_emit

No functional change intended

CC: Tyrel Datwyler <tyreld@linux.ibm.com>
CC: Michael Ellerman <mpe@ellerman.id.au>
CC: Nicholas Piggin <npiggin@gmail.com>
CC: Christophe Leroy <christophe.leroy@csgroup.eu>
CC: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
CC: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com>
CC: "James E.J. Bottomley" <jejb@linux.ibm.com>
CC: "Martin K. Petersen" <martin.petersen@oracle.com>
CC: linux-scsi@vger.kernel.org
CC: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
---
 drivers/scsi/ibmvscsi/ibmvfc.c | 22 ++++++++++------------
 1 file changed, 10 insertions(+), 12 deletions(-)

Comments

Tyrel Datwyler Jan. 16, 2024, 9:38 p.m. UTC | #1 
On 1/15/24 20:51, Li Zhijian wrote:
> 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().
> 
>> ./drivers/scsi/ibmvscsi/ibmvfc.c:3483:8-16: WARNING: please use sysfs_emit
>> ./drivers/scsi/ibmvscsi/ibmvfc.c:3493:8-16: WARNING: please use sysfs_emit
>> ./drivers/scsi/ibmvscsi/ibmvfc.c:3503:8-16: WARNING: please use sysfs_emit
>> ./drivers/scsi/ibmvscsi/ibmvfc.c:3513:8-16: WARNING: please use sysfs_emit
>> ./drivers/scsi/ibmvscsi/ibmvfc.c:3522:8-16: WARNING: please use sysfs_emit
>> ./drivers/scsi/ibmvscsi/ibmvfc.c:3530:8-16: WARNING: please use sysfs_emit
> 
> No functional change intended
> 
> CC: Tyrel Datwyler <tyreld@linux.ibm.com>
> CC: Michael Ellerman <mpe@ellerman.id.au>
> CC: Nicholas Piggin <npiggin@gmail.com>
> CC: Christophe Leroy <christophe.leroy@csgroup.eu>
> CC: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
> CC: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com>
> CC: "James E.J. Bottomley" <jejb@linux.ibm.com>
> CC: "Martin K. Petersen" <martin.petersen@oracle.com>
> CC: linux-scsi@vger.kernel.org
> CC: linuxppc-dev@lists.ozlabs.org
> Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
> ---

Acked-by: Tyrel Datwyler <tyreld@linux.ibm.com>
diff mbox series

Patch

diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index 92c440f2e3a7..4be013976866 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -3480,8 +3480,7 @@  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",
-			vhost->login_buf->resp.partition_name);
+	return sysfs_emit(buf, "%s\n", vhost->login_buf->resp.partition_name);
 }
 
 static ssize_t ibmvfc_show_host_device_name(struct device *dev,
@@ -3490,8 +3489,7 @@  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",
-			vhost->login_buf->resp.device_name);
+	return sysfs_emit(buf, "%s\n", vhost->login_buf->resp.device_name);
 }
 
 static ssize_t ibmvfc_show_host_loc_code(struct device *dev,
@@ -3500,8 +3498,7 @@  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",
-			vhost->login_buf->resp.port_loc_code);
+	return sysfs_emit(buf, "%s\n", vhost->login_buf->resp.port_loc_code);
 }
 
 static ssize_t ibmvfc_show_host_drc_name(struct device *dev,
@@ -3510,8 +3507,7 @@  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",
-			vhost->login_buf->resp.drc_name);
+	return sysfs_emit(buf, "%s\n", vhost->login_buf->resp.drc_name);
 }
 
 static ssize_t ibmvfc_show_host_npiv_version(struct device *dev,
@@ -3519,7 +3515,8 @@  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,
@@ -3527,7 +3524,8 @@  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));
 }
 
 /**
@@ -3548,7 +3546,7 @@  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;
 }
@@ -3587,7 +3585,7 @@  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", scsi->desired_queues);
+	len = sysfs_emit(buf, "%d\n", scsi->desired_queues);
 	spin_unlock_irqrestore(shost->host_lock, flags);
 	return len;
 }