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Raspberry Pi Mouse Device Driver
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Ubuntu 24.04 Server でデバイスドライバのビルドに失敗する #81

Open KuraZuzu opened 4 weeks ago

KuraZuzu commented 4 weeks ago

不具合の概要

Ubuntu24.04 Server の環境でデバイスドライバのビルドをすると失敗する。

実行環境

再現方法

RT Corporation Software Tutorials -> Raspberrry Pi Mouse ->デバイスドライバのインストールの手順に従う。ただし、OSはUbuntu 24.04を使用する。

  1. Raspberry Pi のOSとしてUbuntuの24.04 Serverのイメージを選択したmicroSDカードを用意する（ユーザー名はubuntuとした）
  2. インストール手順に従う（パッケージの更新、ソフトウェアのダウンロード・インストール等）
  3. $ ./build_install.bashを実行してビルド・インストールをする
  4. ビルドの途中で不具合が発生する

期待する動作

ビルドに成功する

ログ・画像

ビルド時に以下のエラーが出力される

$ ./build_install.bash
build_install_header_from_apt_raspi4.bash
make -C /usr/src/linux-headers-6.8.0-1006-raspi M=/home/ubuntu/RaspberryPiMouse/src/drivers V=0 clean
make[1]: Entering directory '/usr/src/linux-headers-6.8.0-1006-raspi'
make[1]: Leaving directory '/usr/src/linux-headers-6.8.0-1006-raspi'
make -C /usr/src/linux-headers-6.8.0-1006-raspi M=/home/ubuntu/RaspberryPiMouse/src/drivers V=0 modules
make[1]: Entering directory '/usr/src/linux-headers-6.8.0-1006-raspi'
warning: the compiler differs from the one used to build the kernel
  The kernel was built by: aarch64-linux-gnu-gcc-13 (Ubuntu 13.2.0-23ubuntu4) 13.2.0
  You are using:           gcc-13 (Ubuntu 13.2.0-23ubuntu4) 13.2.0
  CC [M]  /home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.o
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:323:15: error: initialization of ‘void (*)(struct spi_device *)’ from incompatible pointer type ‘int (*)(struct spi_device *)’ [-Werror=incompatible-pointer-types]
  323 |     .remove = mcp3204_remove,
      |               ^~~~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:323:15: note: (near initialization for ‘mcp3204_driver.remove’)
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:360:14: error: initialization of ‘int (*)(struct i2c_client *)’ from incompatible pointer type ‘int (*)(struct i2c_client *, const struct i2c_device_id *)’ [-Werror=incompatible-pointer-types]
  360 |     .probe = rtcnt_i2c_probe,
      |              ^~~~~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:360:14: note: (near initialization for ‘i2c_counter_driver.probe’)
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:361:15: error: initialization of ‘void (*)(struct i2c_client *)’ from incompatible pointer type ‘int (*)(struct i2c_client *)’ [-Werror=incompatible-pointer-types]
  361 |     .remove = rtcnt_i2c_remove,
      |               ^~~~~~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:361:15: note: (near initialization for ‘i2c_counter_driver.remove’)
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1120:6: warning: no previous prototype for ‘update_signed_count’ [-Wmissing-prototypes]
 1120 | void update_signed_count(struct rtcnt_device_info *dev_info, int rtcnt_count)
      |      ^~~~~~~~~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1156:6: warning: no previous prototype for ‘reset_signed_count’ [-Wmissing-prototypes]
 1156 | void reset_signed_count(struct rtcnt_device_info *dev_info, int rtcnt_count)
      |      ^~~~~~~~~~~~~~~~~~
In file included from ./arch/arm64/include/asm/alternative.h:9,
                 from ./arch/arm64/include/asm/lse.h:14,
                 from ./arch/arm64/include/asm/cmpxchg.h:14,
                 from ./arch/arm64/include/asm/atomic.h:16,
                 from ./include/linux/atomic.h:7,
                 from ./include/asm-generic/bitops/atomic.h:5,
                 from ./arch/arm64/include/asm/bitops.h:25,
                 from ./include/linux/bitops.h:68,
                 from ./include/linux/kernel.h:23,
                 from ./include/linux/cpumask.h:10,
                 from ./include/linux/smp.h:13,
                 from ./include/linux/lockdep.h:14,
                 from ./include/linux/mutex.h:17,
                 from ./include/linux/kernfs.h:11,
                 from ./include/linux/sysfs.h:16,
                 from ./include/linux/kobject.h:20,
                 from ./include/linux/cdev.h:5,
                 from /home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:25:
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘led_register_dev’:
./include/linux/init.h:184:22: error: passing argument 1 of ‘class_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  184 | #define THIS_MODULE (&__this_module)
      |                     ~^~~~~~~~~~~~~~~
      |                      |
      |                      struct module *
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1322:34: note: in expansion of macro ‘THIS_MODULE’
 1322 |         class_led = class_create(THIS_MODULE, DEVNAME_LED);
      |                                  ^~~~~~~~~~~
In file included from ./include/linux/device.h:31,
                 from ./include/linux/cdev.h:8:
./include/linux/device/class.h:228:54: note: expected ‘const char *’ but argument is of type ‘struct module *’
  228 | struct class * __must_check class_create(const char *name);
      |                                          ~~~~~~~~~~~~^~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1322:21: error: too many arguments to function ‘class_create’
 1322 |         class_led = class_create(THIS_MODULE, DEVNAME_LED);
      |                     ^~~~~~~~~~~~
./include/linux/device/class.h:228:29: note: declared here
  228 | struct class * __must_check class_create(const char *name);
      |                             ^~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘buzzer_register_dev’:
./include/linux/init.h:184:22: error: passing argument 1 of ‘class_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  184 | #define THIS_MODULE (&__this_module)
      |                     ~^~~~~~~~~~~~~~~
      |                      |
      |                      struct module *
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1371:37: note: in expansion of macro ‘THIS_MODULE’
 1371 |         class_buzzer = class_create(THIS_MODULE, DEVNAME_BUZZER);
      |                                     ^~~~~~~~~~~
./include/linux/device/class.h:228:54: note: expected ‘const char *’ but argument is of type ‘struct module *’
  228 | struct class * __must_check class_create(const char *name);
      |                                          ~~~~~~~~~~~~^~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1371:24: error: too many arguments to function ‘class_create’
 1371 |         class_buzzer = class_create(THIS_MODULE, DEVNAME_BUZZER);
      |                        ^~~~~~~~~~~~
./include/linux/device/class.h:228:29: note: declared here
  228 | struct class * __must_check class_create(const char *name);
      |                             ^~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘motorrawr_register_dev’:
./include/linux/init.h:184:22: error: passing argument 1 of ‘class_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  184 | #define THIS_MODULE (&__this_module)
      |                     ~^~~~~~~~~~~~~~~
      |                      |
      |                      struct module *
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1417:40: note: in expansion of macro ‘THIS_MODULE’
 1417 |         class_motorrawr = class_create(THIS_MODULE, DEVNAME_MOTORRAWR);
      |                                        ^~~~~~~~~~~
./include/linux/device/class.h:228:54: note: expected ‘const char *’ but argument is of type ‘struct module *’
  228 | struct class * __must_check class_create(const char *name);
      |                                          ~~~~~~~~~~~~^~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1417:27: error: too many arguments to function ‘class_create’
 1417 |         class_motorrawr = class_create(THIS_MODULE, DEVNAME_MOTORRAWR);
      |                           ^~~~~~~~~~~~
./include/linux/device/class.h:228:29: note: declared here
  228 | struct class * __must_check class_create(const char *name);
      |                             ^~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘motorrawl_register_dev’:
./include/linux/init.h:184:22: error: passing argument 1 of ‘class_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  184 | #define THIS_MODULE (&__this_module)
      |                     ~^~~~~~~~~~~~~~~
      |                      |
      |                      struct module *
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1465:40: note: in expansion of macro ‘THIS_MODULE’
 1465 |         class_motorrawl = class_create(THIS_MODULE, DEVNAME_MOTORRAWL);
      |                                        ^~~~~~~~~~~
./include/linux/device/class.h:228:54: note: expected ‘const char *’ but argument is of type ‘struct module *’
  228 | struct class * __must_check class_create(const char *name);
      |                                          ~~~~~~~~~~~~^~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1465:27: error: too many arguments to function ‘class_create’
 1465 |         class_motorrawl = class_create(THIS_MODULE, DEVNAME_MOTORRAWL);
      |                           ^~~~~~~~~~~~
./include/linux/device/class.h:228:29: note: declared here
  228 | struct class * __must_check class_create(const char *name);
      |                             ^~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘switch_register_dev’:
./include/linux/init.h:184:22: error: passing argument 1 of ‘class_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  184 | #define THIS_MODULE (&__this_module)
      |                     ~^~~~~~~~~~~~~~~
      |                      |
      |                      struct module *
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1512:37: note: in expansion of macro ‘THIS_MODULE’
 1512 |         class_switch = class_create(THIS_MODULE, DEVNAME_SWITCH);
      |                                     ^~~~~~~~~~~
./include/linux/device/class.h:228:54: note: expected ‘const char *’ but argument is of type ‘struct module *’
  228 | struct class * __must_check class_create(const char *name);
      |                                          ~~~~~~~~~~~~^~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1512:24: error: too many arguments to function ‘class_create’
 1512 |         class_switch = class_create(THIS_MODULE, DEVNAME_SWITCH);
      |                        ^~~~~~~~~~~~
./include/linux/device/class.h:228:29: note: declared here
  228 | struct class * __must_check class_create(const char *name);
      |                             ^~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘sensor_register_dev’:
./include/linux/init.h:184:22: error: passing argument 1 of ‘class_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  184 | #define THIS_MODULE (&__this_module)
      |                     ~^~~~~~~~~~~~~~~
      |                      |
      |                      struct module *
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1561:37: note: in expansion of macro ‘THIS_MODULE’
 1561 |         class_sensor = class_create(THIS_MODULE, DEVNAME_SENSOR);
      |                                     ^~~~~~~~~~~
./include/linux/device/class.h:228:54: note: expected ‘const char *’ but argument is of type ‘struct module *’
  228 | struct class * __must_check class_create(const char *name);
      |                                          ~~~~~~~~~~~~^~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1561:24: error: too many arguments to function ‘class_create’
 1561 |         class_sensor = class_create(THIS_MODULE, DEVNAME_SENSOR);
      |                        ^~~~~~~~~~~~
./include/linux/device/class.h:228:29: note: declared here
  228 | struct class * __must_check class_create(const char *name);
      |                             ^~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘motoren_register_dev’:
./include/linux/init.h:184:22: error: passing argument 1 of ‘class_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  184 | #define THIS_MODULE (&__this_module)
      |                     ~^~~~~~~~~~~~~~~
      |                      |
      |                      struct module *
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1607:38: note: in expansion of macro ‘THIS_MODULE’
 1607 |         class_motoren = class_create(THIS_MODULE, DEVNAME_MOTOREN);
      |                                      ^~~~~~~~~~~
./include/linux/device/class.h:228:54: note: expected ‘const char *’ but argument is of type ‘struct module *’
  228 | struct class * __must_check class_create(const char *name);
      |                                          ~~~~~~~~~~~~^~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1607:25: error: too many arguments to function ‘class_create’
 1607 |         class_motoren = class_create(THIS_MODULE, DEVNAME_MOTOREN);
      |                         ^~~~~~~~~~~~
./include/linux/device/class.h:228:29: note: declared here
  228 | struct class * __must_check class_create(const char *name);
      |                             ^~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘motor_register_dev’:
./include/linux/init.h:184:22: error: passing argument 1 of ‘class_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  184 | #define THIS_MODULE (&__this_module)
      |                     ~^~~~~~~~~~~~~~~
      |                      |
      |                      struct module *
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1652:36: note: in expansion of macro ‘THIS_MODULE’
 1652 |         class_motor = class_create(THIS_MODULE, DEVNAME_MOTOR);
      |                                    ^~~~~~~~~~~
./include/linux/device/class.h:228:54: note: expected ‘const char *’ but argument is of type ‘struct module *’
  228 | struct class * __must_check class_create(const char *name);
      |                                          ~~~~~~~~~~~~^~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1652:23: error: too many arguments to function ‘class_create’
 1652 |         class_motor = class_create(THIS_MODULE, DEVNAME_MOTOR);
      |                       ^~~~~~~~~~~~
./include/linux/device/class.h:228:29: note: declared here
  228 | struct class * __must_check class_create(const char *name);
      |                             ^~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘mcp3204_get_value’:
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1747:18: error: implicit declaration of function ‘spi_busnum_to_master’ [-Werror=implicit-function-declaration]
 1747 |         master = spi_busnum_to_master(mcp3204_info.bus_num);
      |                  ^~~~~~~~~~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1747:16: warning: assignment to ‘struct spi_controller *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
 1747 |         master = spi_busnum_to_master(mcp3204_info.bus_num);
      |                ^
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘mcp3204_init’:
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1809:16: warning: assignment to ‘struct spi_controller *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
 1809 |         master = spi_busnum_to_master(mcp3204_info.bus_num);
      |                ^
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘mcp3204_exit’:
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1838:16: warning: assignment to ‘struct spi_controller *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
 1838 |         master = spi_busnum_to_master(mcp3204_info.bus_num);
      |                ^
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘rtcntr_i2c_create_cdev’:
./include/linux/init.h:184:22: error: passing argument 1 of ‘class_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  184 | #define THIS_MODULE (&__this_module)
      |                     ~^~~~~~~~~~~~~~~
      |                      |
      |                      struct module *
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1882:47: note: in expansion of macro ‘THIS_MODULE’
 1882 |         dev_info->device_class = class_create(THIS_MODULE, DEVNAME_CNTR);
      |                                               ^~~~~~~~~~~
./include/linux/device/class.h:228:54: note: expected ‘const char *’ but argument is of type ‘struct module *’
  228 | struct class * __must_check class_create(const char *name);
      |                                          ~~~~~~~~~~~~^~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1882:34: error: too many arguments to function ‘class_create’
 1882 |         dev_info->device_class = class_create(THIS_MODULE, DEVNAME_CNTR);
      |                                  ^~~~~~~~~~~~
./include/linux/device/class.h:228:29: note: declared here
  228 | struct class * __must_check class_create(const char *name);
      |                             ^~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘rtcntl_i2c_create_cdev’:
./include/linux/init.h:184:22: error: passing argument 1 of ‘class_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  184 | #define THIS_MODULE (&__this_module)
      |                     ~^~~~~~~~~~~~~~~
      |                      |
      |                      struct module *
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1932:47: note: in expansion of macro ‘THIS_MODULE’
 1932 |         dev_info->device_class = class_create(THIS_MODULE, DEVNAME_CNTL);
      |                                               ^~~~~~~~~~~
./include/linux/device/class.h:228:54: note: expected ‘const char *’ but argument is of type ‘struct module *’
  228 | struct class * __must_check class_create(const char *name);
      |                                          ~~~~~~~~~~~~^~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1932:34: error: too many arguments to function ‘class_create’
 1932 |         dev_info->device_class = class_create(THIS_MODULE, DEVNAME_CNTL);
      |                                  ^~~~~~~~~~~~
./include/linux/device/class.h:228:29: note: declared here
  228 | struct class * __must_check class_create(const char *name);
      |                             ^~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: At top level:
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:2097:5: warning: no previous prototype for ‘dev_init_module’ [-Wmissing-prototypes]
 2097 | int dev_init_module(void)
      |     ^~~~~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:2254:6: warning: no previous prototype for ‘dev_cleanup_module’ [-Wmissing-prototypes]
 2254 | void dev_cleanup_module(void)
      |      ^~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
make[3]: *** [scripts/Makefile.build:243: /home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.o] Error 1
make[2]: *** [/usr/src/linux-headers-6.8.0-1006-raspi/Makefile:1926: /home/ubuntu/RaspberryPiMouse/src/drivers] Error 2
make[1]: *** [Makefile:240: __sub-make] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-6.8.0-1006-raspi'
make: *** [Makefile:9: rtmouse.ko] Error 2

その他

ShotaAk commented 3 weeks ago

class createのエラーについて

/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1322:21: error: too many arguments to function ‘class_create’
 1322 |         class_led = class_create(THIS_MODULE, DEVNAME_LED);

モジュールへのポインタが削除されていました。 使われていないため、のようです。

Commit（v6.4）: https://github.com/torvalds/linux/commit/1aaba11da9aa7d7d6b52a74d45b31cac118295a1

Doc: https://docs.kernel.org/driver-api/infrastructure.html#c.class_create

対策

互換性を残すため、#if で処理を切り替えます

https://github.com/rt-net/RaspberryPiMouse/blob/4f0ebeabf2d2c67092a86324dbcbfd06b4dd16c8/src/drivers/rtmouse.c#L2016

KuraZuzu commented 2 weeks ago

修正概要

関数class_createのエラーに対応してビルドしました。

commit: 9a3044f

手順

関数class_createをkernel6.4.0以降と以前で処理を切り替えるように修正してビルドを実施しました。

例： https://github.com/rt-net/RaspberryPiMouse/blob/9a3044f3b796b21026cbe593290297116190e463/src/drivers/rtmouse.c#L1322

結果

関数class_createに関するエラーは解消されました。依然として、他のエラーは残っています。

~/RaspberryPiMouse/utils$ ./build_install.bash 
build_install_header_from_apt_raspi4.bash
make -C /usr/src/linux-headers-6.8.0-1006-raspi M=/home/ubuntu/RaspberryPiMouse/src/drivers V=0 clean
make[1]: Entering directory '/usr/src/linux-headers-6.8.0-1006-raspi'
make[1]: Leaving directory '/usr/src/linux-headers-6.8.0-1006-raspi'
make -C /usr/src/linux-headers-6.8.0-1006-raspi M=/home/ubuntu/RaspberryPiMouse/src/drivers V=0 modules
make[1]: Entering directory '/usr/src/linux-headers-6.8.0-1006-raspi'
warning: the compiler differs from the one used to build the kernel
  The kernel was built by: aarch64-linux-gnu-gcc-13 (Ubuntu 13.2.0-23ubuntu4) 13.2.0
  You are using:           gcc-13 (Ubuntu 13.2.0-23ubuntu4) 13.2.0
  CC [M]  /home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.o
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:323:15: error: initialization of ‘void (*)(struct spi_device *)’ from incompatible pointer type ‘int (*)(struct spi_device *)’ [-Werror=incompatible-pointer-types]
  323 |     .remove = mcp3204_remove,
      |               ^~~~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:323:15: note: (near initialization for ‘mcp3204_driver.remove’)
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:360:14: error: initialization of ‘int (*)(struct i2c_client *)’ from incompatible pointer type ‘int (*)(struct i2c_client *, const struct i2c_device_id *)’ [-Werror=incompatible-pointer-types]
  360 |     .probe = rtcnt_i2c_probe,
      |              ^~~~~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:360:14: note: (near initialization for ‘i2c_counter_driver.probe’)
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:361:15: error: initialization of ‘void (*)(struct i2c_client *)’ from incompatible pointer type ‘int (*)(struct i2c_client *)’ [-Werror=incompatible-pointer-types]
  361 |     .remove = rtcnt_i2c_remove,
      |               ^~~~~~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:361:15: note: (near initialization for ‘i2c_counter_driver.remove’)
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1120:6: warning: no previous prototype for ‘update_signed_count’ [-Wmissing-prototypes]
 1120 | void update_signed_count(struct rtcnt_device_info *dev_info, int rtcnt_count)
      |      ^~~~~~~~~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1156:6: warning: no previous prototype for ‘reset_signed_count’ [-Wmissing-prototypes]
 1156 | void reset_signed_count(struct rtcnt_device_info *dev_info, int rtcnt_count)
      |      ^~~~~~~~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘mcp3204_get_value’:
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1780:18: error: implicit declaration of function ‘spi_busnum_to_master’ [-Werror=implicit-function-declaration]
 1780 |         master = spi_busnum_to_master(mcp3204_info.bus_num);
      |                  ^~~~~~~~~~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1780:16: warning: assignment to ‘struct spi_controller *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
 1780 |         master = spi_busnum_to_master(mcp3204_info.bus_num);
      |                ^
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘mcp3204_init’:
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1842:16: warning: assignment to ‘struct spi_controller *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
 1842 |         master = spi_busnum_to_master(mcp3204_info.bus_num);
      |                ^
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: In function ‘mcp3204_exit’:
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:1871:16: warning: assignment to ‘struct spi_controller *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
 1871 |         master = spi_busnum_to_master(mcp3204_info.bus_num);
      |                ^
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c: At top level:
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:2138:5: warning: no previous prototype for ‘dev_init_module’ [-Wmissing-prototypes]
 2138 | int dev_init_module(void)
      |     ^~~~~~~~~~~~~~~
/home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.c:2295:6: warning: no previous prototype for ‘dev_cleanup_module’ [-Wmissing-prototypes]
 2295 | void dev_cleanup_module(void)
      |      ^~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
make[3]: *** [scripts/Makefile.build:243: /home/ubuntu/RaspberryPiMouse/src/drivers/rtmouse.o] Error 1
make[2]: *** [/usr/src/linux-headers-6.8.0-1006-raspi/Makefile:1926: /home/ubuntu/RaspberryPiMouse/src/drivers] Error 2
make[1]: *** [Makefile:240: __sub-make] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-6.8.0-1006-raspi'
make: *** [Makefile:9: rtmouse.ko] Error 2