From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 325D4D116F3 for ; Fri, 28 Nov 2025 16:52:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=s49vIKBTKHLdgU3IYFJ6+Os5mV7gAyt6E5qBnunuOKc=; b=n5M33lib7AIykG Gd8xxjENOAUe5JGWP9WB5htSjb1WRq+ZqW8kckL9s++d73vhJv4OD6MZn8hk/5zsCvMRAINaARZ9r Zzt44nXW2A3QxhzdxXCbEmGXhmgE/861oaD0g1sq5uOcudvqdAzEb3FNzJxubA87uyIMesywCiHdS npLoImyds7mryweQo6CIHoW7CG6KohcTBALg5cNI1w/qScwWqHorf5K2+HmPRd4RkjTeFxy91V8OH Ztf0dWr6EGe4r64jYGAm3NnzqxcJSzi776nK2EjU3NOL9OnFCnAkcCkWgeLxN0xAX3Vkta0sWXOXX 6VkeoN6Ywma4jDVtwCRw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vP1hy-00000000evi-3R7s; Fri, 28 Nov 2025 16:52:34 +0000 Received: from smtpout-03.galae.net ([185.246.85.4]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vP1hu-00000000etE-0gq7; Fri, 28 Nov 2025 16:52:33 +0000 Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-03.galae.net (Postfix) with ESMTPS id 8EC254E4194E; Fri, 28 Nov 2025 16:52:28 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 5722F60706; Fri, 28 Nov 2025 16:52:28 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 5953910B0217D; Fri, 28 Nov 2025 17:52:18 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1764348746; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=lnQT9hncBALxwt6zSKKBcvvRQ9xJJffpDMu16HA1ozA=; b=sWJlzoe1EAsLTEWkuwZbXkkcSaFEvn2LztDS1bKvTh2vPIWKsN+AnNwIg7SPbOSH3xb/i0 FYTGGNm219jwcPcpgwKKx8n3TQpaBcg/Sfvo7PGNWYLH40ClS/5jeXgHYZJ/4HUVBuKeC1 BSWuwrtd5XA5CtVh+IfFA6q6wY+Whwn0iJyCCZhgpj9oLAOSefwo9zbuSYHyr7qPyrKNQr w/6rBGncKjEcX2eVjKGAL4C8epuvUEI9YeaZRjBFIfdnFrr4fmyRFdfQd9iuP8JIHAKz+x k43DqkSNJlbDwg8XEimMfXd6C0vKRMPXgGpGbCG8YphoamewaTg/1yB9Fon0QA== From: Luca Ceresoli Date: Fri, 28 Nov 2025 17:50:14 +0100 Subject: [PATCH v2 04/26] drm/bridge: make of_drm_find_bridge() a wrapper of of_drm_get_bridge() MIME-Version: 1.0 Message-Id: <20251128-drm-bridge-alloc-getput-drm_of_find_bridge-v2-4-88f8a107eca2@bootlin.com> References: <20251128-drm-bridge-alloc-getput-drm_of_find_bridge-v2-0-88f8a107eca2@bootlin.com> In-Reply-To: <20251128-drm-bridge-alloc-getput-drm_of_find_bridge-v2-0-88f8a107eca2@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 , Jonathan Corbet , Alexey Brodkin , Phong LE , Liu Ying , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Adrien Grassein , Laurent Pinchart , Tomi Valkeinen , Kieran Bingham , Geert Uytterhoeven , Magnus Damm , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Chun-Kuang Hu , Philipp Zabel , Matthias Brugger , AngeloGioacchino Del Regno , Anitha Chrisanthus , Inki Dae , Seung-Woo Kim , Kyungmin Park , Krzysztof Kozlowski , Alim Akhtar Cc: Hui Pu , Thomas Petazzoni , Louis Chauvet , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-renesas-soc@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-samsung-soc@vger.kernel.org, Luca Ceresoli X-Mailer: b4 0.14.3 X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251128_085230_345388_996162E2 X-CRM114-Status: GOOD ( 14.31 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org of_drm_find_bridge() is identical to of_drm_get_bridge() except it does not increment the refcount. Rewrite it as a wrapper and put the bridge being returned so the behaviour is still the same. Signed-off-by: Luca Ceresoli --- Changed in v2: - Added comment to document why we put the reference --- drivers/gpu/drm/drm_bridge.c | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index 21a84715d221..9b7e3f859973 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -1467,19 +1467,17 @@ EXPORT_SYMBOL(of_drm_get_bridge); */ struct drm_bridge *of_drm_find_bridge(struct device_node *np) { - struct drm_bridge *bridge; - - mutex_lock(&bridge_lock); + struct drm_bridge *bridge = of_drm_get_bridge(np); - list_for_each_entry(bridge, &bridge_list, list) { - if (bridge->of_node == np) { - mutex_unlock(&bridge_lock); - return bridge; - } - } + /** + * We need to emulate the original semantics of + * of_drm_find_bridge(), which was not getting any bridge + * reference. Being now based on of_drm_get_bridge() which gets a + * reference, put it before returning. + */ + drm_bridge_put(bridge); - mutex_unlock(&bridge_lock); - return NULL; + return bridge; } EXPORT_SYMBOL(of_drm_find_bridge); #endif -- 2.51.1 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic