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Subject[PATCH 57/60] drm/udl: Add support for the nomodeset kernel parameter
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 <>

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);
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