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/msm/msm_drv.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 7936e8d498dd..eb098475224b 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -518,6 +518,9 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv) struct msm_mdss *mdss; int ret, i;
+ if (drm_firmware_drivers_only()) + return -ENODEV; + ddev = drm_dev_alloc(drv, dev); if (IS_ERR(ddev)) { DRM_DEV_ERROR(dev, "failed to allocate drm_device\n");