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 <javi...@redhat.com>
---
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
index 1656d27b78b6..4637177184ce 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
@@ -747,6 +747,9 @@ static int atmel_hlcdc_dc_drm_probe(struct platform_device
*pdev)
struct drm_device *ddev;
int ret;
+ if (drm_firmware_drivers_only())
+ return -ENODEV;
+
ddev = drm_dev_alloc(&atmel_hlcdc_dc_driver, &pdev->dev);
if (IS_ERR(ddev))
return PTR_ERR(ddev);
--
2.33.1
