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 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 ---
(no changes since v1)
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index aec39724ebeb..e336358fee20 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -210,6 +210,9 @@ static int mtk_drm_kms_init(struct drm_device *drm) struct device *dma_dev; int ret;
+ if (drm_firmware_drivers_only()) + return -ENODEV; + if (!iommu_present(&platform_bus_type)) return -EPROBE_DEFER;