Re: [PATCH v17 07/10] drm/mediatek: dp: Determine device of next_bridge

CK Hu
2022-09-02T07:45:15Z

Hi, Bo-Chen:

On Thu, 2022-09-01 at 12:41 +0800, Bo-Chen Chen wrote:
> It's not necessary to have a next_bridge for DP device, so we add
> this
> patch to judge this.

Reviewed-by: CK Hu <ck.hu@mediatek.com>

>
> Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
> ---
> drivers/gpu/drm/mediatek/mtk_dp.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c
> b/drivers/gpu/drm/mediatek/mtk_dp.c
> index 136e13150281..e37c9185e4ec 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dp.c
> @@ -1886,7 +1886,10 @@ static int mtk_dp_probe(struct platform_device
> *pdev)
> "failed to request dp irq
> resource\n");
>
> mtk_dp->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node,
> 1, 0);
> - if (IS_ERR(mtk_dp->next_bridge))
> + if (IS_ERR(mtk_dp->next_bridge) &&
> + PTR_ERR(mtk_dp->next_bridge) == -ENODEV)
> + mtk_dp->next_bridge = NULL;
> + else if (IS_ERR(mtk_dp->next_bridge))
> return dev_err_probe(dev, PTR_ERR(mtk_dp->next_bridge),
> "Failed to get bridge\n");
>