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    Subject[PATCH 29/60] drm/panfrost: 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 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@redhat.com>
    ---

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

    diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c
    index 96bb5a465627..6effe1fdc893 100644
    --- a/drivers/gpu/drm/panfrost/panfrost_drv.c
    +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
    @@ -547,6 +547,9 @@ static int panfrost_probe(struct platform_device *pdev)
    struct drm_device *ddev;
    int err;

    + if (drm_firmware_drivers_only())
    + return -ENODEV;
    +
    pfdev = devm_kzalloc(&pdev->dev, sizeof(*pfdev), GFP_KERNEL);
    if (!pfdev)
    return -ENOMEM;
    --
    2.33.1
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