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drm/msm: Add support for the nomodeset kernel parameter

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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>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20211217003752.3946210-30-javierm@redhat.com
This commit is contained in:
Javier Martinez Canillas 2021-12-17 01:37:44 +01:00
parent c0a23916f4
commit 5d40a4b8d8
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GPG Key ID: C751E590D63F3D69
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/msm/msm_drv.c
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@ -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");