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@xxxxxxxxxx>
---
drivers/gpu/drm/shmobile/shmob_drm_drv.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
index 80078a9fd7f6..7011c659a921 100644
--- a/drivers/gpu/drm/shmobile/shmob_drm_drv.c
+++ b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
@@ -195,6 +195,9 @@ static int shmob_drm_probe(struct platform_device *pdev)
unsigned int i;
int ret;
+ if (drm_firmware_drivers_only())
+ return -ENODEV;
+
if (pdata == NULL) {
dev_err(&pdev->dev, "no platform data\n");
return -EINVAL;
--
2.33.1
