Re: [PATCH] hwmon: replace snprintf in show functions with sysfs_emit

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On 10/14/21 11:48 PM, Qing Wang wrote:
show() must not use snprintf() when formatting the value to be
returned to user space.

Fix the following coccicheck warning:
drivers/hwmon/smm665.c:378: WARNING: use scnprintf or sprintf.

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Signed-off-by: Qing Wang <wangqing@xxxxxxxx>

Please refrain from such cleanup patches unless you also
make functional changes to a driver.

Guenter

---
  drivers/hwmon/smm665.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwmon/smm665.c b/drivers/hwmon/smm665.c
index 62906d9..122031e 100644
--- a/drivers/hwmon/smm665.c
+++ b/drivers/hwmon/smm665.c
@@ -375,7 +375,7 @@ static ssize_t smm665_show_##what(struct device *dev, \
  { \
  	struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
  	const int val = smm665_get_##what(dev, attr->index); \
-	return snprintf(buf, PAGE_SIZE, "%d\n", val); \
+	return sysfs_emit(buf, "%d\n", val); \
  }
SMM665_SHOW(min);





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