From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 886CD2222AC; Tue, 6 Jan 2026 17:40:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767721202; cv=none; b=EA+RGM2mP+x8MYVjphIX82T74zEdVGyiFezsEUg+tJK35CGntqCxP8/YcmZ6T3CwNeLH80PCPd+DYZH5yU8VtRsmlEbAG5FdXwkGZrHIhD0/wkSa6H8MQf4f0UhUlfnMkD/+U7ueUSo5fOrABA2kPLP2GV5eFriebycRZkEPYJQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767721202; c=relaxed/simple; bh=LPswcb18Q3/Pi4RUF4BlwEr8loQN0TzNTW8nn6mmknc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CXmos4gLGB6nIdRj/NQCtyLSuZvww1HQ0oc2Lh6FHT0lkANhFwwduX/zCzAWE9YxaOU9pScj2jMgQNHoQKQ9fqLzzizEeH933kIRiUZH8CfKbr1/py2SSICNw4EWg+zX4foWds9zNbk8+rT1AryDDahO9B+Jr2OGnnjNqjdkUq8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=jARimdOe; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="jARimdOe" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E9A03C116C6; Tue, 6 Jan 2026 17:40:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767721202; bh=LPswcb18Q3/Pi4RUF4BlwEr8loQN0TzNTW8nn6mmknc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jARimdOeJ0I+Gqh8e+t+ItQXNVvWwZi4/yVxa077UDsjvxQZo24S2dt65irgdrebX 0mn3NBmF3krWEE/lAKZBrX4lPWcTkiNPs3w8424tqQut9QkIcmZg8RB7kwOvSrR+DV UN2p9XKfTIylHai3Gt4v3RD41lrYZOJVMUUKXa7M= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, CK Hu , Johan Hovold , AngeloGioacchino Del Regno , Chun-Kuang Hu Subject: [PATCH 6.12 467/567] drm/mediatek: Fix probe resource leaks Date: Tue, 6 Jan 2026 18:04:09 +0100 Message-ID: <20260106170508.624822699@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260106170451.332875001@linuxfoundation.org> References: <20260106170451.332875001@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold commit 07c7c640a8eb9e196f357d15d88a59602a947197 upstream. Make sure to unmap and release the component iomap and clock on probe failure (e.g. probe deferral) and on driver unbind. Note that unlike of_iomap(), devm_of_iomap() also checks whether the region is already mapped. Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.") Cc: stable@vger.kernel.org # 4.7 Cc: CK Hu Signed-off-by: Johan Hovold Reviewed-by: AngeloGioacchino Del Regno Link: https://patchwork.kernel.org/project/dri-devel/patch/20250923152340.18234-2-johan@kernel.org/ Signed-off-by: Chun-Kuang Hu Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/mediatek/mtk_ddp_comp.c | 20 ++++++++++++++++---- drivers/gpu/drm/mediatek/mtk_ddp_comp.h | 2 +- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 4 ++-- 3 files changed, 19 insertions(+), 7 deletions(-) --- a/drivers/gpu/drm/mediatek/mtk_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_ddp_comp.c @@ -621,15 +621,20 @@ int mtk_find_possible_crtcs(struct drm_d return ret; } -int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp, +static void mtk_ddp_comp_clk_put(void *_clk) +{ + struct clk *clk = _clk; + + clk_put(clk); +} + +int mtk_ddp_comp_init(struct device *dev, struct device_node *node, struct mtk_ddp_comp *comp, unsigned int comp_id) { struct platform_device *comp_pdev; enum mtk_ddp_comp_type type; struct mtk_ddp_comp_dev *priv; -#if IS_REACHABLE(CONFIG_MTK_CMDQ) int ret; -#endif if (comp_id >= DDP_COMPONENT_DRM_ID_MAX) return -EINVAL; @@ -670,11 +675,18 @@ int mtk_ddp_comp_init(struct device_node if (!priv) return -ENOMEM; - priv->regs = of_iomap(node, 0); + priv->regs = devm_of_iomap(dev, node, 0, NULL); + if (IS_ERR(priv->regs)) + return PTR_ERR(priv->regs); + priv->clk = of_clk_get(node, 0); if (IS_ERR(priv->clk)) return PTR_ERR(priv->clk); + ret = devm_add_action_or_reset(dev, mtk_ddp_comp_clk_put, priv->clk); + if (ret) + return ret; + #if IS_REACHABLE(CONFIG_MTK_CMDQ) ret = cmdq_dev_get_client_reg(comp->dev, &priv->cmdq_reg, 0); if (ret) --- a/drivers/gpu/drm/mediatek/mtk_ddp_comp.h +++ b/drivers/gpu/drm/mediatek/mtk_ddp_comp.h @@ -350,7 +350,7 @@ static inline void mtk_ddp_comp_encoder_ int mtk_ddp_comp_get_id(struct device_node *node, enum mtk_ddp_comp_type comp_type); int mtk_find_possible_crtcs(struct drm_device *drm, struct device *dev); -int mtk_ddp_comp_init(struct device_node *comp_node, struct mtk_ddp_comp *comp, +int mtk_ddp_comp_init(struct device *dev, struct device_node *comp_node, struct mtk_ddp_comp *comp, unsigned int comp_id); enum mtk_ddp_comp_type mtk_ddp_comp_get_type(unsigned int comp_id); void mtk_ddp_write(struct cmdq_pkt *cmdq_pkt, unsigned int value, --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -874,7 +874,7 @@ static int mtk_drm_probe(struct platform (void *)private->mmsys_dev, sizeof(*private->mmsys_dev)); private->ddp_comp[DDP_COMPONENT_DRM_OVL_ADAPTOR].dev = &ovl_adaptor->dev; - mtk_ddp_comp_init(NULL, &private->ddp_comp[DDP_COMPONENT_DRM_OVL_ADAPTOR], + mtk_ddp_comp_init(dev, NULL, &private->ddp_comp[DDP_COMPONENT_DRM_OVL_ADAPTOR], DDP_COMPONENT_DRM_OVL_ADAPTOR); component_match_add(dev, &match, compare_dev, &ovl_adaptor->dev); } @@ -943,7 +943,7 @@ static int mtk_drm_probe(struct platform node); } - ret = mtk_ddp_comp_init(node, &private->ddp_comp[comp_id], comp_id); + ret = mtk_ddp_comp_init(dev, node, &private->ddp_comp[comp_id], comp_id); if (ret) { of_node_put(node); goto err_node;