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From: Robert Foss <robert.foss@linaro.org>
To: Lyude Paul <lyude@redhat.com>
Cc: "Jernej Skrabec" <jernej.skrabec@siol.net>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	"Neil Armstrong" <narmstrong@baylibre.com>,
	"David Airlie" <airlied@linux.ie>,
	nouveau@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
	"Jonas Karlman" <jonas@kwiboo.se>,
	"open list" <linux-kernel@vger.kernel.org>,
	"Jani Nikula" <jani.nikula@linux.intel.com>,
	"Vasily Khoruzhick" <anarsoul@gmail.com>,
	"Andrzej Hajda" <a.hajda@samsung.com>,
	"Torsten Duwe" <duwe@lst.de>,
	amd-gfx@lists.freedesktop.org,
	"Rodrigo Vivi" <rodrigo.vivi@intel.com>,
	"Joe Perches" <joe@perches.com>,
	"Daniel Vetter" <daniel@ffwll.ch>,
	"Icenowy Zheng" <icenowy@aosc.io>,
	"Sam Ravnborg" <sam@ravnborg.org>,
	"Ville Syrjälä" <ville.syrjala@linux.intel.com>,
	"Laurent Pinchart" <Laurent.pinchart@ideasonboard.com>
Subject: Re: [Nouveau] [PATCH 12/30] drm/bridge/analogix/anx6345: Cleanup on errors in anx6345_bridge_attach()
Date: Fri, 19 Mar 2021 15:44:33 +0100
Message-ID: <CAG3jFysehSDHFFXAAc5VexAjyVhCq6hUyD8yWFsE6V3hv_9iPA@mail.gmail.com> (raw)
In-Reply-To: <20210219215326.2227596-13-lyude@redhat.com>

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
>
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Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-19 21:52 [Nouveau] [PATCH 00/30] drm: Use new DRM printk funcs (like drm_dbg_*()) in DP helpers Lyude Paul
2021-02-19 21:52 ` [Nouveau] [PATCH 01/30] drm/dp: Rewrap kdocs for struct drm_dp_aux Lyude Paul
2021-02-19 23:42   ` Randy Dunlap
2021-02-24 18:31     ` Lyude Paul
2021-02-19 21:52 ` [Nouveau] [PATCH 02/30] drm/dp: Fixup kernel docs " Lyude Paul
2021-02-19 23:39   ` Randy Dunlap
2021-02-19 21:52 ` [Nouveau] [PATCH 03/30] drm/tegra: Don't register DP AUX channels before connectors Lyude Paul
2021-04-14 16:49   ` Thierry Reding
2021-04-14 18:17     ` Lyude Paul
2021-02-19 21:53 ` [Nouveau] [PATCH 04/30] drm/bridge/tc358767: Don't register DP AUX channel until bridge is attached Lyude Paul
2021-03-19 14:27   ` Robert Foss
2021-02-19 21:53 ` [Nouveau] [PATCH 05/30] drm/bridge/cdns-mhdp8546: Register DP aux channel with userspace Lyude Paul
2021-02-19 21:53 ` [Nouveau] [PATCH 06/30] drm/bridge/ti-sn65dsi86: (Un)register aux device on bridge attach/detach Lyude Paul
2021-02-21 18:11   ` Laurent Pinchart
2021-02-19 21:53 ` [Nouveau] [PATCH 07/30] drm/bridge/analogix/anx78xx: Add missing drm_dp_aux_unregister() call Lyude Paul
2021-03-19 14:28   ` Robert Foss
2021-02-19 21:53 ` [Nouveau] [PATCH 08/30] drm/bridge/analogix/anx78xx: Setup encoder before registering connector Lyude Paul
2021-03-19 14:35   ` Robert Foss
2021-02-19 21:53 ` [Nouveau] [PATCH 09/30] drm/bridge/analogix/anx78xx: Cleanup on error in anx78xx_bridge_attach() Lyude Paul
2021-03-19 14:37   ` Robert Foss
2021-02-19 21:53 ` [Nouveau] [PATCH 10/30] drm/bridge/analogix/anx6345: Add missing drm_dp_aux_unregister() call Lyude Paul
2021-03-19 14:39   ` Robert Foss
2021-02-19 21:53 ` [Nouveau] [PATCH 11/30] drm/bridge/analogix/anx6345: Don't link encoder until after connector registration Lyude Paul
2021-03-19 14:43   ` Robert Foss
2021-02-19 21:53 ` [Nouveau] [PATCH 12/30] drm/bridge/analogix/anx6345: Cleanup on errors in anx6345_bridge_attach() Lyude Paul
2021-03-19 14:44   ` Robert Foss [this message]
2021-02-19 21:53 ` [Nouveau] [PATCH 13/30] drm/bridge/analogix/dp_core: Unregister DP AUX channel on error in analogix_dp_probe() Lyude Paul
2021-03-19 14:45   ` Robert Foss
2021-02-19 21:53 ` [Nouveau] [PATCH 14/30] drm/nouveau/kms/nv50-: Move AUX adapter reg to connector late register/early unregister Lyude Paul
2021-02-19 21:53 ` [Nouveau] [PATCH 15/30] drm/dp: Add backpointer to drm_device in drm_dp_aux Lyude Paul
2021-02-21 18:21   ` Laurent Pinchart
2021-02-24 20:40     ` Lyude Paul
2021-02-19 21:53 ` [Nouveau] [PATCH 16/30] drm/dp: Rewrap drm_dp_aux_register()/drm_dp_aux_init() kdocs Lyude Paul
2021-02-19 21:53 ` [Nouveau] [PATCH 17/30] drm/dp: Clarify DP AUX registration time Lyude Paul
2021-02-19 21:53 ` [Nouveau] [PATCH 18/30] drm/print: Fixup DRM_DEBUG_KMS_RATELIMITED() Lyude Paul
2021-03-19 11:30   ` Robert Foss
2021-02-19 21:53 ` [Nouveau] [PATCH 19/30] drm/dp: Pass drm_dp_aux to drm_dp_link_train_clock_recovery_delay() Lyude Paul
2021-02-21 18:22   ` Laurent Pinchart
2021-02-23 14:49   ` [Nouveau] [Intel-gfx] " Rodrigo Vivi
2021-02-19 21:53 ` [Nouveau] [PATCH 20/30] drm/dp: Pass drm_dp_aux to drm_dp*_link_train_channel_eq_delay() Lyude Paul
2021-02-21 18:23   ` Laurent Pinchart
2021-02-19 21:53 ` [Nouveau] [PATCH 21/30] drm/dp: Always print aux channel name in logs Lyude Paul
2021-02-19 21:53 ` [Nouveau] [PATCH 22/30] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_detect() Lyude Paul
2021-02-19 21:53 ` [Nouveau] [PATCH 23/30] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_set_tmds_output() Lyude Paul
2021-02-19 21:53 ` [Nouveau] [PATCH 24/30] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_max_tmds_clock() Lyude Paul
2021-02-19 21:53 ` [Nouveau] [PATCH 25/30] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_get_tmds_output() Lyude Paul
2021-02-19 21:53 ` [Nouveau] [PATCH 26/30] drm/dp_dual_mode: Pass drm_device to drm_lspcon_(get|set)_mode() Lyude Paul
2021-02-19 21:53 ` [Nouveau] [PATCH 27/30] drm/dp_mst: Pass drm_dp_mst_topology_mgr to drm_dp_get_vc_payload_bw() Lyude Paul
2021-03-19 11:35   ` Robert Foss
2021-02-19 21:53 ` [Nouveau] [PATCH 28/30] drm/dp: Convert drm_dp_helper.c to using drm_err/drm_dbg_*() Lyude Paul
2021-03-19 11:39   ` Robert Foss
2021-02-19 21:53 ` [Nouveau] [PATCH 29/30] drm/dp_dual_mode: Convert drm_dp_dual_mode_helper.c to using drm_err/drm_dbg_kms() Lyude Paul
2021-02-19 21:53 ` [Nouveau] [PATCH 30/30] drm/dp_mst: Convert drm_dp_mst_topology.c to drm_err()/drm_dbg*() Lyude Paul
2021-03-19 11:47   ` Robert Foss

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