ramips: remove legacy ethernet driver components for mt7621

The mt7621 subtarget has been switched to DSA quite a while ago and
seems to run sufficiently fine. Build with older kernels than 5.4 has
been disabled directly during the kernel bump, so our local ethernet
driver is unused in master since then.

Therefore, let's remove the mt7621-specific parts of "our" ethernet
driver, so we don't have to maintain them and it's obvious to
everybody that they are not used anymore.

This also drops the offloading components as this was specifically
implemented to depend on mt7621.

Signed-off-by: Adrian Schmutzler <[email protected]>

target/linux/ramips/files/drivers/net/ethernet/ralink/Kconfig

@@ -27,23 +27,15 @@ config NET_RALINK_MT7620
 	bool "MT7620"
 	depends on MIPS && SOC_MT7620
 
-config NET_RALINK_MT7621
-	bool "MT7621"
-	depends on MIPS && SOC_MT7621
-
 endchoice
 
-config NET_RALINK_OFFLOAD
-	def_bool NET_RALINK_SOC
-	depends on NET_RALINK_MT7621
-
 config NET_RALINK_HW_QOS
 	def_bool NET_RALINK_SOC
 	depends on NET_RALINK_MT7623
 
 config NET_RALINK_MDIO
 	def_bool NET_RALINK_SOC
-	depends on (NET_RALINK_RT2880 || NET_RALINK_RT3883 || NET_RALINK_MT7620 || NET_RALINK_MT7621)
+	depends on (NET_RALINK_RT2880 || NET_RALINK_RT3883 || NET_RALINK_MT7620)
 	select PHYLIB
 
 config NET_RALINK_MDIO_RT2880
@@ -53,7 +45,7 @@ config NET_RALINK_MDIO_RT2880
 
 config NET_RALINK_MDIO_MT7620
 	def_bool NET_RALINK_SOC
-	depends on (NET_RALINK_MT7620 || NET_RALINK_MT7621)
+	depends on NET_RALINK_MT7620
 	select NET_RALINK_MDIO
 
 config NET_RALINK_ESW_RT3050
@@ -63,8 +55,4 @@ config NET_RALINK_ESW_RT3050
 config NET_RALINK_GSW_MT7620
 	def_tristate NET_RALINK_SOC
 	depends on NET_RALINK_MT7620
-
-config NET_RALINK_GSW_MT7621
-	def_tristate NET_RALINK_SOC
-	depends on NET_RALINK_MT7621
 endif

target/linux/ramips/files/drivers/net/ethernet/ralink/Makefile

@@ -8,15 +8,11 @@ ralink-eth-$(CONFIG_NET_RALINK_MDIO)		+= mdio.o
 ralink-eth-$(CONFIG_NET_RALINK_MDIO_RT2880)	+= mdio_rt2880.o
 ralink-eth-$(CONFIG_NET_RALINK_MDIO_MT7620)	+= mdio_mt7620.o
 
-ralink-eth-$(CONFIG_NET_RALINK_OFFLOAD)	+= mtk_offload.o mtk_debugfs.o
-
 ralink-eth-$(CONFIG_NET_RALINK_RT2880)	+= soc_rt2880.o
 ralink-eth-$(CONFIG_NET_RALINK_RT3050)	+= soc_rt3050.o
 ralink-eth-$(CONFIG_NET_RALINK_RT3883)	+= soc_rt3883.o
 ralink-eth-$(CONFIG_NET_RALINK_MT7620)	+= soc_mt7620.o
-ralink-eth-$(CONFIG_NET_RALINK_MT7621)	+= soc_mt7621.o
 
 obj-$(CONFIG_NET_RALINK_ESW_RT3050)		+= esw_rt3050.o
 obj-$(CONFIG_NET_RALINK_GSW_MT7620)		+= gsw_mt7620.o mt7530.o
-obj-$(CONFIG_NET_RALINK_GSW_MT7621)		+= gsw_mt7621.o mt7530.o
 obj-$(CONFIG_NET_RALINK_SOC)			+= ralink-eth.o