make -C /lib/modules/5.15.32-v8+/build  M=/home/pi/Downloads/LINUX   
make[1]: Entering directory '/usr/src/linux-headers-5.15.32-v8+'
 CC [M]  /home/pi/Downloads/LINUX/ch9344.o
/home/pi/Downloads/LINUX/ch9344.c:2183:16:error: initialization of ‘unsigned int (*)(struct tty_struct *)’ from incompatible pointer type ‘int (*)(struct tty_struct *)’ [-Werror=incompatible-pointer-types]
2183 |  .write_room = ch9344_tty_write_room,
     |                ^~~~~~~~~~~~~~~~~~~~~
/home/pi/Downloads/LINUX/ch9344.c:2183:16:note: (near initialization for ‘ch9344_ops.write_room’)
/home/pi/Downloads/LINUX/ch9344.c:2185:21:error: initialization of ‘unsigned int (*)(struct tty_struct *)’ from incompatible pointer type ‘int (*)(struct tty_struct *)’ [-Werror=incompatible-pointer-types]
2185 |  .chars_in_buffer = ch9344_tty_chars_in_buffer,
     |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~
/home/pi/Downloads/LINUX/ch9344.c:2185:21:note: (near initialization for ‘ch9344_ops.chars_in_buffer’)
/home/pi/Downloads/LINUX/ch9344.c: In function ‘ch9344_init’:
/home/pi/Downloads/LINUX/ch9344.c:2200:22:error: implicit declaration of function ‘alloc_tty_driver’ [-Werror=implicit-function-declaration]
2200 |  ch9344_tty_driver = alloc_tty_driver(CH9344_TTY_MINORS);
     |                      ^~~~~~~~~~~~~~~~
/home/pi/Downloads/LINUX/ch9344.c:2200:20:warning: assignment to ‘struct tty_driver *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
2200 |  ch9344_tty_driver = alloc_tty_driver(CH9344_TTY_MINORS);
     |                    ^
/home/pi/Downloads/LINUX/ch9344.c:2217:3:error: implicit declaration of function ‘put_tty_driver’ [-Werror=implicit-function-declaration]
2217 |   put_tty_driver(ch9344_tty_driver);
     |   ^~~~~~~~~~~~~~
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:277: /home/pi/Downloads/LINUX/ch9344.o] Error 1
make[1]: *** [Makefile:1868: /home/pi/Downloads/LINUX] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-5.15.32-v8+'
make: *** [Makefile:5: default] Error 2

您好，5.13及以上版本的CH9344 Linux驱动已更新，请发送邮件至tech@wch.cn 获取，有问题随时沟通。