Re: [PATCH linux next v2] scsi: ibmvfc: use sysfs_emit() to instead of scnprintf()

Christophe Leroy
2022-11-14T07:18:33Z

Le 14/11/2022 à 04:38, yang.yang29@zte.com.cn a écrit :
> [Vous ne recevez pas souvent de courriers de yang.yang29@zte.com.cn. Découvrez pourquoi ceci est important à https://aka.ms/LearnAboutSenderIdentification ]
>
> From: Xu Panda <xu.panda@zte.com.cn>
>
> Replace the open-code with sysfs_emit() to simplify the code.
>
> ---
> change for v2
> - align code
> ---
> Signed-off-by: Xu Panda <xu.panda@zte.com.cn>
> Signed-off-by: Yang Yang <yang.yang29@zte.com>

Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>

> ---
> drivers/scsi/ibmvscsi/ibmvfc.c | 20 ++++++++------------
> 1 file changed, 8 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
> index 1a0c0b7289d2..841e47c94b12 100644
> --- a/drivers/scsi/ibmvscsi/ibmvfc.c
> +++ b/drivers/scsi/ibmvscsi/ibmvfc.c
> @@ -3411,8 +3411,7 @@ 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,
> @@ -3421,8 +3420,7 @@ 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,
> @@ -3431,8 +3429,7 @@ 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,
> @@ -3441,8 +3438,7 @@ 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,
> @@ -3450,7 +3446,7 @@ 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,
> @@ -3458,7 +3454,7 @@ 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));
> }
>
> /**
> @@ -3479,7 +3475,7 @@ 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;
> }
> @@ -3517,7 +3513,7 @@ 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;
> }
> --
> 2.15.2