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Subject[PATCH v2 37/37] drm/xen: Add support for the nomodeset kernel parameter
Date
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>
Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
---

(no changes since v1)

drivers/gpu/drm/xen/xen_drm_front.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/xen/xen_drm_front.c b/drivers/gpu/drm/xen/xen_drm_front.c
index e63088c2121d..0d8e6bd1ccbf 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);
--
2.33.1
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