On Wed, Mar 18, 2020 at 9:39 PM Bjorn Andersson
<bjorn.andersson@xxxxxxxxxx> wrote:
>
> With the introduction of '3ef2f119bd3e ("drm/msm: Use
> drm_attach_bridge() to attach a bridge to an encoder")' the HDMI bridge
> is attached both in msm_hdmi_bridge_init() and later in
> msm_hdmi_modeset_init().
>
> The second attempt fails as the bridge is already attached to the
> encoder and the whole process is aborted.
>
> So instead make msm_hdmi_bridge_init() just initialize the hdmi_bridge
> object and let msm_hdmi_modeset_init() attach it later.
>
> Fixes: 3ef2f119bd3e ("drm/msm: Use drm_attach_bridge() to attach a bridge to an encoder")
> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Thanks, I think this should also be solved by:
https://patchwork.freedesktop.org/patch/357331/?series=74611&rev=1
BR,
-R
> ---
> drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 19 +++----------------
> 1 file changed, 3 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> index 6e380db9287b..0e103ee1b730 100644
> --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> @@ -271,31 +271,18 @@ static const struct drm_bridge_funcs msm_hdmi_bridge_funcs = {
> /* initialize bridge */
> struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi)
> {
> - struct drm_bridge *bridge = NULL;
> struct hdmi_bridge *hdmi_bridge;
> - int ret;
> + struct drm_bridge *bridge;
>
> hdmi_bridge = devm_kzalloc(hdmi->dev->dev,
> sizeof(*hdmi_bridge), GFP_KERNEL);
> - if (!hdmi_bridge) {
> - ret = -ENOMEM;
> - goto fail;
> - }
> + if (!hdmi_bridge)
> + return ERR_PTR(-ENOMEM);
>
> hdmi_bridge->hdmi = hdmi;
>
> bridge = &hdmi_bridge->base;
> bridge->funcs = &msm_hdmi_bridge_funcs;
>
> - ret = drm_bridge_attach(hdmi->encoder, bridge, NULL, 0);
> - if (ret)
> - goto fail;
> -
> return bridge;
> -
> -fail:
> - if (bridge)
> - msm_hdmi_bridge_destroy(bridge);
> -
> - return ERR_PTR(ret);
> }
> --
> 2.24.0
>
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