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() will be converted as weel 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: Jiri Kosina <jikos@xxxxxxxxxx> CC: Jonathan Cameron <jic23@xxxxxxxxxx> CC: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx> CC: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx> CC: linux-input@xxxxxxxxxxxxxxx CC: linux-iio@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/hid/hid-sensor-custom.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/hid/hid-sensor-custom.c b/drivers/hid/hid-sensor-custom.c index d85398721659..ee1a118834f0 100644 --- a/drivers/hid/hid-sensor-custom.c +++ b/drivers/hid/hid-sensor-custom.c @@ -155,7 +155,7 @@ static ssize_t enable_sensor_show(struct device *dev, { struct hid_sensor_custom *sensor_inst = dev_get_drvdata(dev); - return sprintf(buf, "%d\n", sensor_inst->enable); + return sysfs_emit(buf, "%d\n", sensor_inst->enable); } static int set_power_report_state(struct hid_sensor_custom *sensor_inst, @@ -372,14 +372,14 @@ static ssize_t show_value(struct device *dev, struct device_attribute *attr, sizeof(struct hid_custom_usage_desc), usage_id_cmp); if (usage_desc) - return snprintf(buf, PAGE_SIZE, "%s\n", - usage_desc->desc); + return sysfs_emit(buf, "%s\n", + usage_desc->desc); else - return sprintf(buf, "not-specified\n"); + return sysfs_emit(buf, "not-specified\n"); } else return -EINVAL; - return sprintf(buf, "%d\n", value); + return sysfs_emit(buf, "%d\n", value); } static ssize_t store_value(struct device *dev, struct device_attribute *attr, -- 2.29.2
