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/tiny/arcpgu.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/tiny/arcpgu.c b/drivers/gpu/drm/tiny/arcpgu.c index f8531c50a072..9268f37762c8 100644 --- a/drivers/gpu/drm/tiny/arcpgu.c +++ b/drivers/gpu/drm/tiny/arcpgu.c @@ -378,6 +378,9 @@ static int arcpgu_probe(struct platform_device *pdev) struct arcpgu_drm_private *arcpgu; int ret;
+ if (drm_firmware_drivers_only()) + return -ENODEV; + arcpgu = devm_drm_dev_alloc(&pdev->dev, &arcpgu_drm_driver, struct arcpgu_drm_private, drm); if (IS_ERR(arcpgu))