[openwrt/openwrt] generic: fix compilation warning for ar8xxx swconfig

[LEDE Commits]

dangole pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/49d9d2b2105d3b547dd4ae35a691ed6eec6b4845

commit 49d9d2b2105d3b547dd4ae35a691ed6eec6b4845
Author: Ansuel Smith <ansuelsmth at gmail.com>
AuthorDate: Tue Mar 1 16:47:11 2022 +0100

    generic: fix compilation warning for ar8xxx swconfig
    
    There are 2 warning for ar8xxx swconfig.
    - Fix not used dev variable when ETHERNET_PACKET_MANGLE
      is not selected
    - Convert fallthrough comment to compilation macro
    
    Signed-off-by: Ansuel Smith <ansuelsmth at gmail.com>
---
 target/linux/generic/files/drivers/net/phy/ar8216.c | 2 ++
 target/linux/generic/files/drivers/net/phy/ar8327.c | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/target/linux/generic/files/drivers/net/phy/ar8216.c b/target/linux/generic/files/drivers/net/phy/ar8216.c
index 3e6494aebb..bf98fd599e 100644
--- a/target/linux/generic/files/drivers/net/phy/ar8216.c
+++ b/target/linux/generic/files/drivers/net/phy/ar8216.c
@@ -2433,7 +2433,9 @@ static int
 ar8xxx_phy_config_init(struct phy_device *phydev)
 {
 	struct ar8xxx_priv *priv = phydev->priv;
+#ifdef CONFIG_ETHERNET_PACKET_MANGLE
 	struct net_device *dev = phydev->attached_dev;
+#endif
 	int ret;
 
 	if (WARN_ON(!priv))
diff --git a/target/linux/generic/files/drivers/net/phy/ar8327.c b/target/linux/generic/files/drivers/net/phy/ar8327.c
index dce52ce0e4..3313149559 100644
--- a/target/linux/generic/files/drivers/net/phy/ar8327.c
+++ b/target/linux/generic/files/drivers/net/phy/ar8327.c
@@ -183,7 +183,7 @@ ar8327_phy_fixup(struct ar8xxx_priv *priv, int phy)
 
 	case 2:
 		ar8xxx_phy_mmd_write(priv, phy, 0x7, 0x3c, 0x0);
-		/* fallthrough */
+		fallthrough;
 	case 4:
 		ar8xxx_phy_mmd_write(priv, phy, 0x3, 0x800d, 0x803f);
 		ar8xxx_phy_dbg_write(priv, phy, 0x3d, 0x6860);