hwmon: replace snprintf in show functions with sysfs_emit

coccicheck complains about the use of snprintf() in sysfs
show functions.

drivers/hwmon/ina3221.c:701:8-16: WARNING: use scnprintf or sprintf

This results in a large number of patch submissions. Fix it all in
one go using the following coccinelle rules. Use sysfs_emit instead
of scnprintf or sprintf since that makes more sense.

@depends on patch@
identifier show, dev, attr, buf;
@@

ssize_t show(struct device *dev, struct device_attribute *attr, char *buf)
{
	<...
  return
-		snprintf(buf, \( PAGE_SIZE \| PAGE_SIZE - 1 \),
+		sysfs_emit(buf,
		...);
	...>
}

@depends on patch@
identifier show, dev, attr, buf, rc;
@@

ssize_t show(struct device *dev, struct device_attribute *attr, char *buf)
{
	<...
  rc =
-		snprintf(buf, \( PAGE_SIZE \| PAGE_SIZE - 1 \),
+		sysfs_emit(buf,
		...);
	...>
}

While at it, remove unnecessary braces and as well as unnecessary
else after return statements to address checkpatch warnings in the
resulting patch.

Cc: Zihao Tang <tangzihao1@hisilicon.com>
Cc: Jay Fang <f.fangjian@huawei.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/hwmon/ltc4261.c b/drivers/hwmon/ltc4261.c
index 1dab84b52df5..b81e9c3d297b 100644
--- a/drivers/hwmon/ltc4261.c
+++ b/drivers/hwmon/ltc4261.c
@@ -130,7 +130,7 @@ static ssize_t ltc4261_value_show(struct device *dev,
 		return PTR_ERR(data);
 
 	value = ltc4261_get_value(data, attr->index);
-	return snprintf(buf, PAGE_SIZE, "%d\n", value);
+	return sysfs_emit(buf, "%d\n", value);
 }
 
 static ssize_t ltc4261_bool_show(struct device *dev,
@@ -147,7 +147,7 @@ static ssize_t ltc4261_bool_show(struct device *dev,
 	if (fault)		/* Clear reported faults in chip register */
 		i2c_smbus_write_byte_data(data->client, LTC4261_FAULT, ~fault);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", fault ? 1 : 0);
+	return sysfs_emit(buf, "%d\n", fault ? 1 : 0);
 }
 
 /*