ff_init 1953 drivers/hid/hid-core.c (connect_mask & HID_CONNECT_FF) && hdev->ff_init) ff_init 1954 drivers/hid/hid-core.c hdev->ff_init(hdev); ff_init 1347 drivers/hid/usbhid/hid-core.c hid->ff_init = hid_pidff_init; ff_init 604 include/linux/hid.h int (*ff_init)(struct hid_device *);