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SubjectRe: [PATCH] drm/probe_helper: Don't bother probing when connectors are forced off
On Mon, Sep 17, 2018 at 01:43:44PM -0400, Lyude Paul wrote:
> Userspace asked them to be forced off, so why would we care about what a
> probe tells us?

I believe there should be force checks in the callers already.
Or are we missing some?

>
> Signed-off-by: Lyude Paul <lyude@redhat.com>
> ---
> drivers/gpu/drm/drm_probe_helper.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c
> index a1bb157bfdfa..56d2b5dd1f58 100644
> --- a/drivers/gpu/drm/drm_probe_helper.c
> +++ b/drivers/gpu/drm/drm_probe_helper.c
> @@ -269,7 +269,9 @@ drm_helper_probe_detect_ctx(struct drm_connector *connector, bool force)
> retry:
> ret = drm_modeset_lock(&connector->dev->mode_config.connection_mutex, &ctx);
> if (!ret) {
> - if (funcs->detect_ctx)
> + if (connector->force == DRM_FORCE_OFF)
> + ret = connector_status_disconnected;

connector->force is protected by mode_config.mutex IIRC.

> + else if (funcs->detect_ctx)
> ret = funcs->detect_ctx(connector, &ctx, force);
> else if (connector->funcs->detect)
> ret = connector->funcs->detect(connector, force);
> @@ -317,6 +319,9 @@ drm_helper_probe_detect(struct drm_connector *connector,
> if (ret)
> return ret;
>
> + if (connector->force == DRM_FORCE_OFF)
> + return connector_status_disconnected;
> +
> if (funcs->detect_ctx)
> return funcs->detect_ctx(connector, ctx, force);
> else if (connector->funcs->detect)
> --
> 2.17.1
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

--
Ville Syrjälä
Intel

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