From: Javier Martinez Canillas Date: Fri, 17 Dec 2021 00:37:52 +0000 (+0100) Subject: drm/xen: Add support for the nomodeset kernel parameter X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=9d6bf794084d9258dadf2754d911fcfeb13ea8fc;p=linux.git drm/xen: Add support for the nomodeset kernel parameter 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 Reviewed-by: Oleksandr Andrushchenko Acked-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20211217003752.3946210-38-javierm@redhat.com --- diff --git a/drivers/gpu/drm/xen/xen_drm_front.c b/drivers/gpu/drm/xen/xen_drm_front.c index e63088c2121da..0d8e6bd1ccbf2 100644 --- a/drivers/gpu/drm/xen/xen_drm_front.c +++ b/drivers/gpu/drm/xen/xen_drm_front.c @@ -495,6 +495,9 @@ static int xen_drm_drv_init(struct xen_drm_front_info *front_info) struct drm_device *drm_dev; int ret; + if (drm_firmware_drivers_only()) + return -ENODEV; + DRM_INFO("Creating %s\n", xen_drm_driver.desc); drm_info = kzalloc(sizeof(*drm_info), GFP_KERNEL);