From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpout-04.galae.net (smtpout-04.galae.net [185.171.202.116]) (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 AF1803A783D for ; Mon, 4 May 2026 10:45:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.171.202.116 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777891549; cv=none; b=Wqfw//ICvIgJne+WaIWqqtvjHIKlcnvNZAB8sHwENPnF0vCWRVzf+lvBI+5gEzsxZGvUtRYe/pDN1mrzUx+xnBcoD42m4SRAp4MqZUkm4kV1R2LJc+Ztykf6Ba4INZIFHrjckJxAj5OL52Ltz8GB4pKCLrkvvBKnRXDb8x/RqC0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777891549; c=relaxed/simple; bh=P+ybbR2JCX5P3ToxNXc4BQOIlQX42qMh7LwK2rkO8kU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=nnBRg+aXUkn8XmDo/YjeeTdkKT5JfFkIZwyx7mjKnPqR7QjV1DEL6hUVggzyTxFyv29BpKCaGRLTdTyiexw0RRszU+vg+RT+yu2tEpcgzjyOJhE06t2ifSfVcyksDaNyGPDUS6dmNBENles1OvBAzdBDyxsviWcE7GMuk5+KqzU= 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=ic4Gw11t; arc=none smtp.client-ip=185.171.202.116 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="ic4Gw11t" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-04.galae.net (Postfix) with ESMTPS id CDECBC5D72B; Mon, 4 May 2026 10:46:32 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 7A37C5FD5F; Mon, 4 May 2026 10:45:46 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id DB74111AD2694; Mon, 4 May 2026 12:45:40 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1777891545; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=p2/Y7roARxFkweio2HkVO8IrTHGmO9nhgwGPDGzMLOQ=; b=ic4Gw11tVoBzcev859MKmJFk5XV2yg0UzV+TedTO8QFMN72e3t7NptuwQg+ipx2Xkz2G9H CFphTJUmCUaqx3PVmoiNsU6LrjAl1eGxvJOWJXOt9Gp+6MH5WomSjTjGEExiZFy66gMQlk pf6AhK3JZiosah++zVbwjF1vMuodVnncYDooovbLKUNUmb9yr0OaTWhve17XqSwoL0wc5n hrM/yHWpAhRP1vzRsipUJBtH+mEGqhh1H26BliwBmnILOj/qBwN7QxIf4aTke7dugT1jeN LH7JEE30PEmNFJwfUMJt4p7dlx+SWCVqrPrwyJHZS9WFxwSjC3SkOIW+PO+zVA== From: Luca Ceresoli Date: Mon, 04 May 2026 12:45:09 +0200 Subject: [PATCH v4 06/11] drm/bridge: lontium-lt9611uxc: 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: <20260504-drm-bridge-alloc-getput-panel_or_bridge-v4-6-b578c3daaf10@bootlin.com> References: <20260504-drm-bridge-alloc-getput-panel_or_bridge-v4-0-b578c3daaf10@bootlin.com> In-Reply-To: <20260504-drm-bridge-alloc-getput-panel_or_bridge-v4-0-b578c3daaf10@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 , Sumit Semwal , 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-lt9611uxc.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c index 11aab07d88df..9427cc2358ae 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c @@ -35,7 +35,6 @@ struct lt9611uxc { struct device *dev; struct drm_bridge bridge; - struct drm_bridge *next_bridge; struct regmap *regmap; /* Protects all accesses to registers by stopping the on-chip MCU */ @@ -284,7 +283,7 @@ static int lt9611uxc_bridge_attach(struct drm_bridge *bridge, { struct lt9611uxc *lt9611uxc = bridge_to_lt9611uxc(bridge); - return drm_bridge_attach(encoder, lt9611uxc->next_bridge, + return drm_bridge_attach(encoder, lt9611uxc->bridge.next_bridge, bridge, flags); } @@ -487,7 +486,11 @@ static int lt9611uxc_parse_dt(struct device *dev, lt9611uxc->dsi1_node = of_graph_get_remote_node(dev->of_node, 1, -1); - return drm_of_find_panel_or_bridge(dev->of_node, 2, -1, NULL, <9611uxc->next_bridge); + lt9611uxc->bridge.next_bridge = of_drm_get_bridge_by_endpoint(dev->of_node, 2, -1); + if (IS_ERR(lt9611uxc->bridge.next_bridge)) + return PTR_ERR(lt9611uxc->bridge.next_bridge); + + return 0; } static int lt9611uxc_gpio_init(struct lt9611uxc *lt9611uxc) -- 2.53.0