Doesn't compile on newer Linux kernel #3
Description
Building on kernel 5.15.84
We get this output. Sounds like some of these functions were changed in the newer kernel
/home/pi/xr-usb-serial-master/xr_usb_serial_common.c:1918:17: error: initialization of ‘unsigned int (*)(struct tty_struct *)’ from incompatible pointer type ‘int (*)(struct tty_struct *)’ [-Werror=incompatible-pointer-types]
1918 | .write_room = xr_usb_serial_tty_write_room,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/pi/xr-usb-serial-master/xr_usb_serial_common.c:1918:17: note: (near initialization for ‘xr_usb_serial_ops.write_room’)
/home/pi/xr-usb-serial-master/xr_usb_serial_common.c:1922:21: error: initialization of ‘unsigned int (*)(struct tty_struct *)’ from incompatible pointer type ‘int (*)(struct tty_struct *)’ [-Werror=incompatible-pointer-types]
1922 | .chars_in_buffer = xr_usb_serial_tty_chars_in_buffer,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/pi/xr-usb-serial-master/xr_usb_serial_common.c:1922:21: note: (near initialization for ‘xr_usb_serial_ops.chars_in_buffer’)
/home/pi/xr-usb-serial-master/xr_usb_serial_common.c: In function ‘xr_usb_serial_init’:
/home/pi/xr-usb-serial-master/xr_usb_serial_common.c:1936:29: error: implicit declaration of function ‘alloc_tty_driver’ [-Werror=implicit-function-declaration]
1936 | xr_usb_serial_tty_driver = alloc_tty_driver(XR_USB_SERIAL_TTY_MINORS);
| ^~~~~~~~~~~~~~~~
/home/pi/xr-usb-serial-master/xr_usb_serial_common.c:1936:27: warning: assignment to ‘struct tty_driver *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
1936 | xr_usb_serial_tty_driver = alloc_tty_driver(XR_USB_SERIAL_TTY_MINORS);
| ^
/home/pi/xr-usb-serial-master/xr_usb_serial_common.c:1953:3: error: implicit declaration of function ‘put_tty_driver’ [-Werror=implicit-function-declaration]
1953 | put_tty_driver(xr_usb_serial_tty_driver);
| ^~~~~~~~~~~~~~
cc1: some warnings being treated as errors