5.10.52-rt47-v7l compilation error

[Dual01]

By compiling the driver on an RPI, I get the following errors:

CC [M] drivers/net/usb/ax88179_178a.o
drivers/net/usb/ax88179_178a.c:1948:3: error: ‘const struct ethtool_ops’ has no member named ‘get_settings’; did you mean ‘get_strings’?
.get_settings = ax88179_get_settings,
^~~~~~~~~~~~
get_strings
drivers/net/usb/ax88179_178a.c:1948:18: error: initialization of ‘int (*)(struct net_device )’ from incompatible pointer type ‘int ()(struct net_device *, struct ethtool_cmd )’ [-Werror=incompatible-pointer-types]
.get_settings = ax88179_get_settings,
^~~~~~~~~~~~~~~~~~~~
drivers/net/usb/ax88179_178a.c:1948:18: note: (near initialization for ‘ops.get_regs_len’)
drivers/net/usb/ax88179_178a.c:1949:3: error: ‘const struct ethtool_ops’ has no member named ‘set_settings’; did you mean ‘get_strings’?
.set_settings = ax88179_set_settings,
^~~~~~~~~~~~
get_strings
drivers/net/usb/ax88179_178a.c:1949:18: error: initialization of ‘void ()(struct net_device *, struct ethtool_regs *, void )’ from incompatible pointer type ‘int ()(struct net_device *, struct ethtool_cmd )’ [-Werror=incompatible-pointer-types]
.set_settings = ax88179_set_settings,
^~~~~~~~~~~~~~~~~~~~
drivers/net/usb/ax88179_178a.c:1949:18: note: (near initialization for ‘ops.get_regs’)
drivers/net/usb/ax88179_178a.c:2061:21: error: initialization of ‘void ()(struct net_device , unsigned int)’ from incompatible pointer type ‘void ()(struct net_device *)’ [-Werror=incompatible-pointer-types]
.ndo_tx_timeout = ax88179_tx_timeout,
^~~~~~~~~~~~~~~~~~
drivers/net/usb/ax88179_178a.c:2061:21: note: (near initialization for ‘ax88179_netdev_ops.ndo_tx_timeout’)
drivers/net/usb/ax88179_178a.c: In function ‘intr_callback’:
drivers/net/usb/ax88179_178a.c:578:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
netif_device_detach(dev->netdev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/usb/ax88179_178a.c:579:2: note: here
case -ENOENT:
^~~~
It would be great to get a tip what could be the reason for the failure.
Thanks
Dieter

[Dual01]

I tried now with driver version 2.0.0
seems to work, but I still get a warning:
drivers/net/usb/ax88179_178a.c: In function ‘ax_intr_callback’:
drivers/net/usb/ax88179_178a.c:529:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
netif_device_detach(axdev->netdev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/usb/ax88179_178a.c:530:2: note: here
case -ENOENT:
^~~~