diff mbox series

[v2,29/37] drm/msm: Add support for the nomodeset kernel parameter

Message ID 20211217003752.3946210-30-javierm@redhat.com (mailing list archive)
State Mainlined, archived
Headers show
Series drm: Make drivers to honour the nomodeset parameter | expand

Commit Message

Javier Martinez Canillas Dec. 17, 2021, 12:37 a.m. UTC 
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>
---

(no changes since v1)

 drivers/gpu/drm/msm/msm_drv.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 892c04365239..8f30e68ae3b5 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");