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/hisilicon/kirin/kirin_drm_drv.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c index 98ae9a48f3fe..2f4c81dc8681 100644 --- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c +++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c @@ -274,6 +274,9 @@ static int kirin_drm_platform_probe(struct platform_device *pdev) struct component_match *match = NULL; struct device_node *remote;
+ if (drm_firmware_drivers_only()) + return -ENODEV; + remote = of_graph_get_remote_node(np, 0, 0); if (!remote) return -ENODEV;