linux-kernel - Re: [PATCH v2 24/37] drm/hyperv: Add support for the nomodeset kernel parameter

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Message-ID: <CAHFnvW3owW38B31SdYWcjCf2jLqUmGnCZ4m_iS1rPW2M9HUrMg@mail.gmail.com>
Date:   Mon, 20 Dec 2021 09:10:18 -0800
From:   Deepak Rawat <drawat.floss@...il.com>
To:     Javier Martinez Canillas <javierm@...hat.com>
Cc:     linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v2 24/37] drm/hyperv: Add support for the nomodeset kernel parameter

On Thu, Dec 16, 2021 at 4:38 PM Javier Martinez Canillas
<javierm@...hat.com> wrote:
>
> 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@...hat.com>
> ---

Acked-by: Deepak Rawat <drawat.floss@...il.com>

>
> (no changes since v1)
>
>  drivers/gpu/drm/hyperv/hyperv_drm_drv.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
> index 00e53de4812b..4a8941fa0815 100644
> --- a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
> +++ b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
> @@ -305,6 +305,9 @@ static int __init hyperv_init(void)
>  {
>         int ret;
>
> +       if (drm_firmware_drivers_only())
> +               return -ENODEV;
> +
>         ret = pci_register_driver(&hyperv_pci_driver);
>         if (ret != 0)
>                 return ret;
> --
> 2.33.1
>