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@xxxxxxxxxx> --- drivers/gpu/drm/xlnx/zynqmp_dpsub.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c index ac37053412a1..cca55b8a8cf1 100644 --- a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c +++ b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c @@ -191,6 +191,9 @@ static int zynqmp_dpsub_probe(struct platform_device *pdev) struct zynqmp_dpsub *dpsub; int ret; + if (drm_firmware_drivers_only()) + return -ENODEV; + /* Allocate private data. */ dpsub = devm_drm_dev_alloc(&pdev->dev, &zynqmp_dpsub_drm_driver, struct zynqmp_dpsub, drm); -- 2.33.1
