error

[Jacek Woźniczak]

I have a following error (make)

linking kernel
umass.o: In function `umass_cam_attach_sim':
umass.o(.text+0x17e3): undefined reference to `cam_simq_alloc'
umass.o(.text+0x1834): undefined reference to `cam_sim_alloc'
umass.o(.text+0x1843): undefined reference to `cam_simq_free'
umass.o(.text+0x1865): undefined reference to `xpt_bus_register'
umass.o: In function `umass_cam_rescan_callback':
umass.o(.text+0x1893): undefined reference to `xpt_free_path'
umass.o: In function `umass_cam_rescan':
umass.o(.text+0x1908): undefined reference to `xpt_periph'
umass.o(.text+0x1917): undefined reference to `xpt_create_path'
umass.o(.text+0x1933): undefined reference to `xpt_setup_ccb'
umass.o(.text+0x1950): undefined reference to `xpt_action'
umass.o: In function `umass_cam_detach_sim':
umass.o(.text+0x1a5c): undefined reference to `xpt_bus_deregister'
umass.o(.text+0x1a78): undefined reference to `cam_sim_free'
umass.o: In function `umass_cam_action':
umass.o(.text+0x1e60): undefined reference to `cam_calc_geometry'
umass.o(.text+0x1e71): undefined reference to `xpt_done'
umass.o: In function `umass_cam_cb':
umass.o(.text+0x1feb): undefined reference to `xpt_done'
umass.o: In function `umass_cam_sense_cb':
umass.o(.text+0x2154): undefined reference to `xpt_done'
umass.o: In function `umass_cam_quirk_cb':
umass.o(.text+0x218b): undefined reference to `xpt_done'
*** Error code 1