dnl #
dnl # commit a19a6ee6cad2b20292a774c2f56ba8039b0fac9c
dnl # backlight: Allow properties to be passed at registration
dnl #
AC_DEFUN([AC_AMDGPU_BACKLIGHT_DEVICE_REGISTER_WITH_5ARGS],
	[AC_MSG_CHECKING([whether backlight_device_register() with 5args is available])
	AC_KERNEL_TRY_COMPILE([
		#include <linux/backlight.h>
	],[
		backlight_device_register(NULL, NULL, NULL, NULL, NULL);
	],[
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_BACKLIGHT_DEVICE_REGISTER_WITH_5ARGS, 1, [backlight_device_register() with 5 args is available])
	],[
		AC_MSG_RESULT(no)
	])
])