Function prototype or declaration at include/linux/cdev.h, line 29 References: arch/powerpc/platforms/book3s/vas-api.c, line 455 drivers/char/bsr.c, line 241 drivers/char/virtio_console.c, line 1400 drivers/char/xilinx_hwicap/xilinx_hwicap.c, line 684 drivers/char/xillybus/xillybus_class.c, line 100 drivers/comedi/comedi_fops.c, line 3380 drivers/crypto/qat/qat_common/adf_ctl_drv.c, line 63 drivers/dax/device.c, line 442 drivers/dma-buf/dma-heap.c, line 267 drivers/fpga/dfl.c, line 662 drivers/hid/hidraw.c, line 626 drivers/infiniband/hw/hfi1/device.c, line 33 drivers/infiniband/hw/qib/qib_file_ops.c, line 2279 drivers/media/dvb-core/dvbdev.c, line 1051 drivers/media/v4l2-core/v4l2-dev.c, line 1023 drivers/misc/cxl/flash.c, line 527 drivers/mtd/ubi/vmt.c, line 586 drivers/net/tap.c, line 1328 drivers/remoteproc/remoteproc_cdev.c, line 118 drivers/rpmsg/rpmsg_char.c, line 383 drivers/rpmsg/rpmsg_char.c, line 499 drivers/s390/crypto/zcrypt_api.c, line 2118 drivers/scsi/pmcraid.c, line 5172 drivers/scsi/sg.c, line 1520 drivers/scsi/st.c, line 4177 drivers/staging/axis-fifo/axis-fifo.c, line 927 drivers/staging/greybus/fw-management.c, line 627 drivers/staging/pi433/pi433_if.c, line 1238 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_dev.c, line 1395 drivers/staging/vme/devices/vme_user.c, line 559 drivers/tty/pty.c, line 941 drivers/tty/tty_io.c, line 3191 drivers/tty/tty_io.c, line 3613 drivers/tty/tty_io.c, line 3619 drivers/tty/vt/vt.c, line 3591 drivers/uio/uio.c, line 848 drivers/usb/core/devio.c, line 2797 drivers/vdpa/vdpa_user/vduse_dev.c, line 1595 drivers/vdpa/vdpa_user/vduse_dev.c, line 1608 drivers/vfio/vfio.c, line 2425 lib/test_hmm.c, line 1205 samples/vfio-mdev/mbochs.c, line 1444 samples/vfio-mdev/mdpy.c, line 753 samples/vfio-mdev/mtty.c, line 1364