According to disable Documentation/admin-guide/kernel-parameters.txt, this parameter can be used to disable kernel modesetting.
DRM drivers will not perform display-mode changes or accelerated rendering and only the systewm system framebuffer will be available if it was set-up.
But only a few DRM drivers currently check for nomodeset, make this driver to also support the command line parameter.
Signed-off-by: Javier Martinez Canillas javierm@redhat.com ---
drivers/gpu/drm/udl/udl_drv.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index 5703277c6f52..d5a0aa762ec8 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -91,6 +91,9 @@ static int udl_usb_probe(struct usb_interface *interface, int r; struct udl_device *udl;
+ if (drm_firmware_drivers_only()) + return -ENODEV; + udl = udl_driver_create(interface); if (IS_ERR(udl)) return PTR_ERR(udl);