linux-kernel - [PATCH v2 10/16] drm/panel/omapdrm: Keep up with refcounting

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Message-Id: <20250619-b4-of_drm_find_panel_part1-v2-10-0df94aecc43d@redhat.com>
Date: Thu, 19 Jun 2025 14:16:02 -0500
From: Anusha Srivatsa <asrivats@...hat.com>
To: Neil Armstrong <neil.armstrong@...aro.org>, 
 Jessica Zhang <jessica.zhang@....qualcomm.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Inki Dae <inki.dae@...sung.com>, Jagan Teki <jagan@...rulasolutions.com>, 
 Marek Szyprowski <m.szyprowski@...sung.com>, 
 Andrzej Hajda <andrzej.hajda@...el.com>, Robert Foss <rfoss@...nel.org>, 
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Chen-Yu Tsai <wens@...e.org>, Samuel Holland <samuel@...lland.org>, 
 Seung-Woo Kim <sw0312.kim@...sung.com>, 
 Kyungmin Park <kyungmin.park@...sung.com>, 
 Krzysztof Kozlowski <krzk@...nel.org>, 
 Alim Akhtar <alim.akhtar@...sung.com>, 
 Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>, 
 Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>, 
 Kieran Bingham <kieran.bingham+renesas@...asonboard.com>, 
 Geert Uytterhoeven <geert+renesas@...der.be>, 
 Magnus Damm <magnus.damm@...il.com>, Biju Das <biju.das.jz@...renesas.com>, 
 Tomi Valkeinen <tomi.valkeinen@...asonboard.com>, 
 Alain Volmat <alain.volmat@...s.st.com>, 
 Raphael Gallais-Pou <rgallaispou@...il.com>, Stefan Agner <stefan@...er.ch>, 
 Alison Wang <alison.wang@....com>, Linus Walleij <linus.walleij@...aro.org>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Mikko Perttunen <mperttunen@...dia.com>, 
 Jonathan Hunter <jonathanh@...dia.com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev, 
 linux-samsung-soc@...r.kernel.org, linux-renesas-soc@...r.kernel.org, 
 linux-tegra@...r.kernel.org, Anusha Srivatsa <asrivats@...hat.com>
Subject: [PATCH v2 10/16] drm/panel/omapdrm: Keep up with refcounting

Put the reference of the panel returned by
of_drm_find_panel().

Patch added in v2.

Signed-off-by: Anusha Srivatsa <asrivats@...hat.com>
---
 drivers/gpu/drm/omapdrm/dss/output.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/output.c b/drivers/gpu/drm/omapdrm/dss/output.c
index 7378e855c278c3809bc431ff48a1c5a41b7dedfc..259ef19d4be2cb559ba9ffe53db9e6e4b4409b21 100644
--- a/drivers/gpu/drm/omapdrm/dss/output.c
+++ b/drivers/gpu/drm/omapdrm/dss/output.c
@@ -48,7 +48,6 @@ int omapdss_device_init_output(struct omap_dss_device *out,
 			ret = PTR_ERR(bridge);
 			goto error;
 		}
-
 		out->bridge = bridge;
 	}
 
@@ -76,9 +75,12 @@ int omapdss_device_init_output(struct omap_dss_device *out,
 
 void omapdss_device_cleanup_output(struct omap_dss_device *out)
 {
-	if (out->bridge && out->panel)
+	if (out->bridge && out->panel) {
 		drm_panel_bridge_remove(out->next_bridge ?
 					out->next_bridge : out->bridge);
+		drm_panel_put(out->panel);
+
+	}
 }
 
 void dss_mgr_set_timings(struct omap_dss_device *dssdev,

-- 
2.48.1