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/fsl-dcu/fsl_dcu_drm_drv.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c index 660fe573db96..9b9e1b200005 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c @@ -255,6 +255,9 @@ static int fsl_dcu_drm_probe(struct platform_device *pdev) int ret; u8 div_ratio_shift = 0;
+ if (drm_firmware_drivers_only()) + return -ENODEV; + fsl_dev = devm_kzalloc(dev, sizeof(*fsl_dev), GFP_KERNEL); if (!fsl_dev) return -ENOMEM;