mem_class 940 drivers/char/mem.c static struct class *mem_class; mem_class 949 drivers/char/mem.c mem_class = class_create(THIS_MODULE, "mem"); mem_class 950 drivers/char/mem.c if (IS_ERR(mem_class)) mem_class 951 drivers/char/mem.c return PTR_ERR(mem_class); mem_class 953 drivers/char/mem.c mem_class->devnode = mem_devnode; mem_class 964 drivers/char/mem.c device_create(mem_class, NULL, MKDEV(MEM_MAJOR, minor),