net: phy: Convert to use sysfs_emit() APIs

Follow the advice of the Documentation/filesystems/sysfs.rst and show()
should only use sysfs_emit() or sysfs_emit_at() when formatting the value
to be returned to user space.
Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/1664364860-29153-1-git-send-email-wangyufen@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/phy/mdio_bus.c

@@ -232,7 +232,7 @@ static ssize_t mdio_bus_stat_field_show(struct device *dev,
 		val = mdio_bus_get_stat(&bus->stats[sattr->addr],
 					sattr->field_offset);
 
-	return sprintf(buf, "%llu\n", val);
+	return sysfs_emit(buf, "%llu\n", val);
 }
 
 static ssize_t mdio_bus_device_stat_field_show(struct device *dev,
@@ -251,7 +251,7 @@ static ssize_t mdio_bus_device_stat_field_show(struct device *dev,
 
 	val = mdio_bus_get_stat(&bus->stats[addr], sattr->field_offset);
 
-	return sprintf(buf, "%llu\n", val);
+	return sysfs_emit(buf, "%llu\n", val);
 }
 
 #define MDIO_BUS_STATS_ATTR_DECL(field, file)				\

drivers/net/phy/phy_device.c

@@ -522,7 +522,7 @@ phy_id_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct phy_device *phydev = to_phy_device(dev);
 
-	return sprintf(buf, "0x%.8lx\n", (unsigned long)phydev->phy_id);
+	return sysfs_emit(buf, "0x%.8lx\n", (unsigned long)phydev->phy_id);
 }
 static DEVICE_ATTR_RO(phy_id);
 
@@ -537,7 +537,7 @@ phy_interface_show(struct device *dev, struct device_attribute *attr, char *buf)
 	else
 		mode = phy_modes(phydev->interface);
 
-	return sprintf(buf, "%s\n", mode);
+	return sysfs_emit(buf, "%s\n", mode);
 }
 static DEVICE_ATTR_RO(phy_interface);
 
@@ -547,7 +547,7 @@ phy_has_fixups_show(struct device *dev, struct device_attribute *attr,
 {
 	struct phy_device *phydev = to_phy_device(dev);
 
-	return sprintf(buf, "%d\n", phydev->has_fixups);
+	return sysfs_emit(buf, "%d\n", phydev->has_fixups);
 }
 static DEVICE_ATTR_RO(phy_has_fixups);
 
@@ -557,7 +557,7 @@ static ssize_t phy_dev_flags_show(struct device *dev,
 {
 	struct phy_device *phydev = to_phy_device(dev);
 
-	return sprintf(buf, "0x%08x\n", phydev->dev_flags);
+	return sysfs_emit(buf, "0x%08x\n", phydev->dev_flags);
 }
 static DEVICE_ATTR_RO(phy_dev_flags);
 
@@ -1312,7 +1312,7 @@ phy_standalone_show(struct device *dev, struct device_attribute *attr,
 {
 	struct phy_device *phydev = to_phy_device(dev);
 
-	return sprintf(buf, "%d\n", !phydev->attached_dev);
+	return sysfs_emit(buf, "%d\n", !phydev->attached_dev);
 }
 static DEVICE_ATTR_RO(phy_standalone);