diff mbox series

[12/30] drm/bridge/analogix/anx6345: Cleanup on errors in anx6345_bridge_attach()

Message ID 20210219215326.2227596-13-lyude@redhat.com (mailing list archive)
State New, archived
Headers show
Series drm: Use new DRM printk funcs (like drm_dbg_*()) in DP helpers | expand

Commit Message

Lyude Paul Feb. 19, 2021, 9:53 p.m. UTC
Another drive-by fix I found when fixing DP AUX adapter across the kernel
tree - make sure we don't leak resources (and by proxy-AUX adapters) on
failures in anx6345_bridge_attach() by unrolling on errors.

Signed-off-by: Lyude Paul <lyude@redhat.com>
---
 drivers/gpu/drm/bridge/analogix/analogix-anx6345.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

Comments

Robert Foss March 19, 2021, 2:44 p.m. UTC | #1
Hey Lyude,

Thanks for the patch, it looks good to me.

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

On Fri, 19 Feb 2021 at 22:58, Lyude Paul <lyude@redhat.com> wrote:
>
> Another drive-by fix I found when fixing DP AUX adapter across the kernel
> tree - make sure we don't leak resources (and by proxy-AUX adapters) on
> failures in anx6345_bridge_attach() by unrolling on errors.
>
> Signed-off-by: Lyude Paul <lyude@redhat.com>
> ---
>  drivers/gpu/drm/bridge/analogix/analogix-anx6345.c | 11 ++++++++---
>  1 file changed, 8 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
> index 6258f16da0e8..aa6cda458eb9 100644
> --- a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
> +++ b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
> @@ -550,7 +550,7 @@ static int anx6345_bridge_attach(struct drm_bridge *bridge,
>                                  DRM_MODE_CONNECTOR_eDP);
>         if (err) {
>                 DRM_ERROR("Failed to initialize connector: %d\n", err);
> -               return err;
> +               goto aux_unregister;
>         }
>
>         drm_connector_helper_add(&anx6345->connector,
> @@ -562,16 +562,21 @@ static int anx6345_bridge_attach(struct drm_bridge *bridge,
>                                            bridge->encoder);
>         if (err) {
>                 DRM_ERROR("Failed to link up connector to encoder: %d\n", err);
> -               return err;
> +               goto connector_cleanup;
>         }
>
>         err = drm_connector_register(&anx6345->connector);
>         if (err) {
>                 DRM_ERROR("Failed to register connector: %d\n", err);
> -               return err;
> +               goto connector_cleanup;
>         }
>
>         return 0;
> +connector_cleanup:
> +       drm_connector_cleanup(&anx6345->connector);
> +aux_unregister:
> +       drm_dp_aux_unregister(&anx6345->aux);
> +       return err;
>  }
>
>  static void anx6345_bridge_detach(struct drm_bridge *bridge)
> --
> 2.29.2
>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
index 6258f16da0e8..aa6cda458eb9 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
@@ -550,7 +550,7 @@  static int anx6345_bridge_attach(struct drm_bridge *bridge,
 				 DRM_MODE_CONNECTOR_eDP);
 	if (err) {
 		DRM_ERROR("Failed to initialize connector: %d\n", err);
-		return err;
+		goto aux_unregister;
 	}
 
 	drm_connector_helper_add(&anx6345->connector,
@@ -562,16 +562,21 @@  static int anx6345_bridge_attach(struct drm_bridge *bridge,
 					   bridge->encoder);
 	if (err) {
 		DRM_ERROR("Failed to link up connector to encoder: %d\n", err);
-		return err;
+		goto connector_cleanup;
 	}
 
 	err = drm_connector_register(&anx6345->connector);
 	if (err) {
 		DRM_ERROR("Failed to register connector: %d\n", err);
-		return err;
+		goto connector_cleanup;
 	}
 
 	return 0;
+connector_cleanup:
+	drm_connector_cleanup(&anx6345->connector);
+aux_unregister:
+	drm_dp_aux_unregister(&anx6345->aux);
+	return err;
 }
 
 static void anx6345_bridge_detach(struct drm_bridge *bridge)