~/ $ make -j8 KERNELRELEASE=5.2.0-0.bpo.3-amd64 -C /lib/modules/5.2.0-0.bpo.3-amd64/build M=/var/lib/dkms/evdi/1.6.0+dfsg/build DKMS_BUILD=1
make: Entering directory '/usr/src/linux-headers-5.2.0-0.bpo.3-amd64'
  CC [M]  /var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_drv.o
  CC [M]  /var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_connector.o
  CC [M]  /var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_main.o
  CC [M]  /var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_fb.o
  CC [M]  /var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_painter.o
  CC [M]  /var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_params.o
  CC [M]  /var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_cursor.o
  CC [M]  /var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_debug.o
  CC [M]  /var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_ioc32.o
/var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_drv.c:45:11: error: initialization of ?vm_fault_t (*)(struct vm_fault *)? {aka ?unsigned int (*)(struct vm_fault *)?} from incompatible pointer type ?int (*)(struct vm_fault *)? [-Werror=incompatible-pointer-types]
  .fault = evdi_gem_fault,
           ^~~~~~~~~~~~~~
/var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_drv.c:45:11: note: (near initialization for ?evdi_gem_vm_ops.fault?)
/var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_fb.c: In function ?evdifb_create?:
/var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_fb.c:445:2: error: implicit declaration of function ?drm_fb_helper_fill_fix?; did you mean ?drm_fb_helper_fill_info?? [-Werror=implicit-function-declaration]
  drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth);
  ^~~~~~~~~~~~~~~~~~~~~~
  drm_fb_helper_fill_info
/var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_fb.c:447:2: error: implicit declaration of function ?drm_fb_helper_fill_var?; did you mean ?drm_fb_helper_fill_info?? [-Werror=implicit-function-declaration]
  drm_fb_helper_fill_var(info, &efbdev->helper, sizes->fb_width,
  ^~~~~~~~~~~~~~~~~~~~~~
  drm_fb_helper_fill_info
/var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_connector.c:124:16: error: ?drm_helper_probe_single_connector_modes? undeclared here (not in a function); did you mean ?drm_helper_move_panel_connectors_to_head??
  .fill_modes = drm_helper_probe_single_connector_modes,
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                drm_helper_move_panel_connectors_to_head
make[3]: *** [/usr/src/linux-headers-5.2.0-0.bpo.3-common/scripts/Makefile.build:283: /var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_connector.o] Error 1
make[3]: *** Waiting for unfinished jobs....
/var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_main.c: In function ?evdi_driver_setup?:
/var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_main.c:54:2: error: implicit declaration of function ?drm_kms_helper_poll_init?; did you mean ?drm_modeset_lock_init?? [-Werror=implicit-function-declaration]
  drm_kms_helper_poll_init(dev);
  ^~~~~~~~~~~~~~~~~~~~~~~~
  drm_modeset_lock_init
/var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_painter.c: In function ?evdi_painter_connect?:
/var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_painter.c:675:2: error: implicit declaration of function ?drm_helper_hpd_irq_event?; did you mean ?drm_helper_crtc_in_use?? [-Werror=implicit-function-declaration]
  drm_helper_hpd_irq_event(evdi->ddev);
  ^~~~~~~~~~~~~~~~~~~~~~~~
  drm_helper_crtc_in_use
/var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_main.c: In function ?evdi_driver_unload?:
/var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_main.c:95:2: error: implicit declaration of function ?drm_kms_helper_poll_fini?; did you mean ?drm_modeset_lock_fini?? [-Werror=implicit-function-declaration]
  drm_kms_helper_poll_fini(dev);
  ^~~~~~~~~~~~~~~~~~~~~~~~
  drm_modeset_lock_fini
cc1: some warnings being treated as errors
make[3]: *** [/usr/src/linux-headers-5.2.0-0.bpo.3-common/scripts/Makefile.build:283: /var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_drv.o] Error 1
cc1: some warnings being treated as errors
make[3]: *** [/usr/src/linux-headers-5.2.0-0.bpo.3-common/scripts/Makefile.build:283: /var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_main.o] Error 1
cc1: some warnings being treated as errors
make[3]: *** [/usr/src/linux-headers-5.2.0-0.bpo.3-common/scripts/Makefile.build:283: /var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_fb.o] Error 1
cc1: some warnings being treated as errors
make[3]: *** [/usr/src/linux-headers-5.2.0-0.bpo.3-common/scripts/Makefile.build:283: /var/lib/dkms/evdi/1.6.0+dfsg/build/evdi_painter.o] Error 1
make[2]: *** [/usr/src/linux-headers-5.2.0-0.bpo.3-common/Makefile:1610: _module_/var/lib/dkms/evdi/1.6.0+dfsg/build] Error 2
make[1]: *** [Makefile:179: sub-make] Error 2
make: *** [Makefile:8: all] Error 2
make: Leaving directory '/usr/src/linux-headers-5.2.0-0.bpo.3-amd64'