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(). sprintf() and scnprintf() will be converted as well if they have. Generally, this patch is generated by make coccicheck M=<path/to/file> MODE=patch \ COCCI=scripts/coccinelle/api/device_attr_show.cocci No functional change intended CC: "James E.J. Bottomley" <jejb@xxxxxxxxxxxxx> CC: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx> CC: linux-scsi@xxxxxxxxxxxxxxx Signed-off-by: Li Zhijian <lizhijian@xxxxxxxxxxx> --- This is a part of the work "Fix coccicheck device_attr_show warnings"[1] Split them per subsystem so that the maintainer can review it easily [1] https://lore.kernel.org/lkml/20240116041129.3937800-1-lizhijian@xxxxxxxxxxx/ --- drivers/scsi/pmcraid.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c index e8bcc3a88732..56376d335b21 100644 --- a/drivers/scsi/pmcraid.c +++ b/drivers/scsi/pmcraid.c @@ -3538,7 +3538,7 @@ static ssize_t pmcraid_show_log_level( struct Scsi_Host *shost = class_to_shost(dev); struct pmcraid_instance *pinstance = (struct pmcraid_instance *)shost->hostdata; - return snprintf(buf, PAGE_SIZE, "%d\n", pinstance->current_log_level); + return sysfs_emit(buf, "%d\n", pinstance->current_log_level); } /** @@ -3599,8 +3599,7 @@ static ssize_t pmcraid_show_drv_version( char *buf ) { - return snprintf(buf, PAGE_SIZE, "version: %s\n", - PMCRAID_DRIVER_VERSION); + return sysfs_emit(buf, "version: %s\n", PMCRAID_DRIVER_VERSION); } static struct device_attribute pmcraid_driver_version_attr = { @@ -3632,9 +3631,8 @@ static ssize_t pmcraid_show_adapter_id( u32 adapter_id = pci_dev_id(pinstance->pdev); u32 aen_group = pmcraid_event_family.id; - return snprintf(buf, PAGE_SIZE, - "adapter id: %d\nminor: %d\naen group: %d\n", - adapter_id, MINOR(pinstance->cdev.dev), aen_group); + return sysfs_emit(buf, "adapter id: %d\nminor: %d\naen group: %d\n", + adapter_id, MINOR(pinstance->cdev.dev), aen_group); } static struct device_attribute pmcraid_adapter_id_attr = { -- 2.29.2
