我正在跟踪Linux设备驱动程序(第三版)。当我试图模仿第六章中的双桨例子时,会报告一个错误。它说:
error: implicit declaration of function ‘init_MUTEX’ [-Werror=implicit-function-declaration]有人能告诉我init_MUTEX去哪儿了吗?
set but not used [-Werror=unused-but-set-variable]linux.c:334:22: error: variable 'unused' set but not used [-Werror=unused-but-set-variable]
linux.c: In function'linux_set