The pm_runtime_enable will increase power disable depth.
Thus a pairing decrement is needed on the error handling
path to keep it balanced according to context.

Fixes: 44cfc62 ("drm/bridge: Add NWL MIPI DSI host controller support")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/gpu/drm/bridge/nwl-dsi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/bridge/nwl-dsi.c b/drivers/gpu/drm/bridge/nwl-dsi.c
index a7389a0facfb..fc3ad9fab867 100644
--- a/drivers/gpu/drm/bridge/nwl-dsi.c
+++ b/drivers/gpu/drm/bridge/nwl-dsi.c
@@ -1206,6 +1206,7 @@ static int nwl_dsi_probe(struct platform_device *pdev)
 
 	ret = nwl_dsi_select_input(dsi);
 	if (ret < 0) {
+		pm_runtime_disable(dev);
 		mipi_dsi_host_unregister(&dsi->dsi_host);
 		return ret;
 	}
-- 
2.17.1

Hey Miaoqian,

Thanks for submitting this patch!

On Wed, 5 Jan 2022 at 11:48, Miaoqian Lin <linmq006@gmail.com> wrote:
>
> The pm_runtime_enable will increase power disable depth.
> Thus a pairing decrement is needed on the error handling
> path to keep it balanced according to context.
>
> Fixes: 44cfc62 ("drm/bridge: Add NWL MIPI DSI host controller support")

In the future, please use 12 chars of the hash. I'll fix it this time,
but please use 12 characters going forward.

> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
> ---
>  drivers/gpu/drm/bridge/nwl-dsi.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/bridge/nwl-dsi.c b/drivers/gpu/drm/bridge/nwl-dsi.c
> index a7389a0facfb..fc3ad9fab867 100644
> --- a/drivers/gpu/drm/bridge/nwl-dsi.c
> +++ b/drivers/gpu/drm/bridge/nwl-dsi.c
> @@ -1206,6 +1206,7 @@ static int nwl_dsi_probe(struct platform_device *pdev)
>
>         ret = nwl_dsi_select_input(dsi);
>         if (ret < 0) {
> +               pm_runtime_disable(dev);
>                 mipi_dsi_host_unregister(&dsi->dsi_host);
>                 return ret;
>         }
> --
> 2.17.1
>

Fixed commit hash length, added my r-b and applied to drm-misc-next.

Reviewed-by: Robert Foss <robert.foss@linaro.org>