ethtool: fix drvinfo strings set in drivers

Use strlcpy where possible to ensure the string is \0 terminated.
Use always sizeof(string) instead of 32, ETHTOOL_BUSINFO_LEN
and custom defines.
Use snprintf instead of sprint.
Remove unnecessary inits of ->fw_version
Remove unnecessary inits of drvinfo struct.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index e32083d5d8f8..f795b0ca7ee6 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -203,10 +203,10 @@ dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 static void dsa_slave_get_drvinfo(struct net_device *dev,
                                   struct ethtool_drvinfo *drvinfo)
 {
-        strncpy(drvinfo->driver, "dsa", 32);
-        strncpy(drvinfo->version, dsa_driver_version, 32);
-        strncpy(drvinfo->fw_version, "N/A", 32);
-        strncpy(drvinfo->bus_info, "platform", 32);
+        strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
+        strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version));
+        strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
+        strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
 }
 
 static int dsa_slave_nway_reset(struct net_device *dev)