On Thu, 14 Mar 2024 16:47:51 +0800 Li Zhijian <lizhijian@xxxxxxxxxxx> 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(). > > 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> Hi Li Zhijian, One trivial comment inline. Otherwise straight forward so Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> > --- > 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); rewrap the line as will be under 80 chars. > 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,
