From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpout-02.galae.net (smtpout-02.galae.net [185.246.84.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BA29F3195FC for ; Tue, 28 Apr 2026 15:31:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.246.84.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777390316; cv=none; b=AHvEOYJXs2ih0E0C4wUvHNVYi6b3NB3NtCzSLvW44IiBmd7LS5yX/HuylY/4S+ZHyefgStvn4ubZ+dpClBHUv6dGaghHOqviDyl1TvuRM/FnJaF0Om0lHmIhIOEUqJixlPHoJtQAFwcuMivTWB8SSgE/ALeaymswvkWFNSBxnqM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777390316; c=relaxed/simple; bh=egJWbWYiMv76eWAr6DTbvGsd4Kf5Sn0T33rsJRhBOrs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=s6CjmpF7yFiuBu8bR/7uxehW1u40o34SkpezqFjPOsshrSR19Nxm779MednnY0ZEVE8MxgOc9isNuJHPrhC6s7Jc6LsJrQVk3MpLzhgOBoHpm3nDtAjop3mtZaMo7RR3+ox3TXQA3zBpgXmLmyoRSPxCSnlcmrxJqRArndRiTi0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=yxeoqSF9; arc=none smtp.client-ip=185.246.84.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="yxeoqSF9" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id 927F71A3471; Tue, 28 Apr 2026 15:31:53 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 65C4B601D0; Tue, 28 Apr 2026 15:31:53 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id B918110728E2A; Tue, 28 Apr 2026 17:31:46 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1777390311; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=T2up0nNcnVaU0yQbv4uPCscdyC0ZWVrNHuUZWb1EmZw=; b=yxeoqSF9K+Q4fliOa+s+bFBj4JFowTFcmRj4GKKnDfmuvener9LSBbgLhZwiPJW8hLR0Bj 5IZqW7V61auRDBJpl30ZFByIdOFfeZHqFuf0si3vLFbDD+d/IUiDKWlGYse4jTHGTgnbMt oJrMaUmAshs+UpsG8iOH3HwUsgvQvxYg0fVSlBXFskXhmfOH7zfM5W8WE13qLrtubBOguP m2A7CCmjBTSairleSamceBDSt9tiQ/ivPv7l1MMWFM7gF5iR5dqBYb59yNSz4bdNrP5jjd nnWmyzp0DfbcrSy6cZvp4hAn1KgzDswU3WcOM1Td6rqcVLxHZjt1PUuNfwU7uw== From: Luca Ceresoli Date: Tue, 28 Apr 2026 17:30:56 +0200 Subject: [PATCH v3 07/11] drm/bridge: lt9611: switch to of_drm_get_bridge_by_endpoint() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260428-drm-bridge-alloc-getput-panel_or_bridge-v3-7-a537b5567add@bootlin.com> References: <20260428-drm-bridge-alloc-getput-panel_or_bridge-v3-0-a537b5567add@bootlin.com> In-Reply-To: <20260428-drm-bridge-alloc-getput-panel_or_bridge-v3-0-a537b5567add@bootlin.com> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , Xinliang Liu , Sumit Semwal , Yongqin Liu , John Stultz , Tomi Valkeinen , Michal Simek Cc: Hui Pu , Ian Ray , Thomas Petazzoni , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, Luca Ceresoli , Dmitry Baryshkov X-Mailer: b4 0.15.2 X-Last-TLS-Session-Version: TLSv1.3 This driver calls drm_of_find_panel_or_bridge() with a NULL pointer in the @panel parameter, thus using a reduced feature set of that function. Replace this call with the simpler of_drm_get_bridge_by_endpoint(). Since of_drm_get_bridge_by_endpoint() increases the refcount of the returned bridge, ensure it is put on removal. To achieve this, instead of adding an explicit drm_bridge_put(), migrate to the bridge::next_bridge pointer which is automatically put when the bridge is eventually freed. Reviewed-by: Dmitry Baryshkov Signed-off-by: Luca Ceresoli --- drivers/gpu/drm/bridge/lontium-lt9611.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c index 4517aee83332..4b4418cc83bf 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611.c @@ -37,7 +37,6 @@ struct lt9611 { struct device *dev; struct drm_bridge bridge; - struct drm_bridge *next_bridge; struct regmap *regmap; @@ -761,7 +760,7 @@ static int lt9611_bridge_attach(struct drm_bridge *bridge, { struct lt9611 *lt9611 = bridge_to_lt9611(bridge); - return drm_bridge_attach(encoder, lt9611->next_bridge, + return drm_bridge_attach(encoder, lt9611->bridge.next_bridge, bridge, flags); } @@ -1058,7 +1057,11 @@ static int lt9611_parse_dt(struct device *dev, lt9611->ac_mode = of_property_read_bool(dev->of_node, "lt,ac-mode"); - return drm_of_find_panel_or_bridge(dev->of_node, 2, -1, NULL, <9611->next_bridge); + lt9611->bridge.next_bridge = of_drm_get_bridge_by_endpoint(dev->of_node, 2, -1); + if (IS_ERR(lt9611->bridge.next_bridge)) + return PTR_ERR(lt9611->bridge.next_bridge); + + return 0; } static int lt9611_gpio_init(struct lt9611 *lt9611) -- 2.53.0