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 ABE5CC982CC for ; Wed, 16 Sep 2026 18:15:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=E7hqsuNw+XIH+JzADUw7Btl7S0GwTeqV3/F8/Qkhvcs=; b=PbxxqMw/9ElHKyig+r+4T7D62A fmWLpjfL0l93bn1E5ygQP8OxIDwGmzrkzbyCd1lpZa6uxdZzrQeVsFNPJ3GM895bWbYeZr/EEE4An qCb9LDMe6lM1irn925/DTyBAJXTYPcD395oSXMdu5GBjF2FAWYJs61v0LgSQXBXiK8diI2dXA+/6/ Q2OQTWffOMGs6pkHpty0kBxja3yiOF5cIDBzJt/nWYvbUxyAYk7ont7bDtLxaGS/U7ZEiq0WjKbya hSNvRjx6GvP9j6YhhQhFv8xbla0wlN4vJfVsy1Yd5TIY4Up+PmbjHd7wCg5PprWw6FNx10Wazaw8J vgTWPetg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x6u9v-00000009wGI-0Uhk; Wed, 16 Sep 2026 18:15:03 +0000 Received: from smtp25.cstnet.cn ([159.226.251.25] helo=cstnet.cn) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x6u9s-00000009wFY-1wX7; Wed, 16 Sep 2026 18:15:02 +0000 Received: from dfae2b116770.home.arpa (unknown [36.110.52.2]) by APP-05 (Coremail) with SMTP id zQCowAA3oDqe3KpqlU9vCA--.23663S2; Thu, 17 Sep 2026 02:14:54 +0800 (CST) From: Wentao Liang To: airlied@gmail.com Cc: andrzej.hajda@intel.com, andy.yan@rock-chips.com, dri-devel@lists.freedesktop.org, heiko@sntech.de, hjc@rock-chips.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, simona@ffwll.ch, tzimmermann@suse.de, Wentao Liang , stable@vger.kernel.org Subject: [PATCH] drm/rockchip: dsi: Fix second reference leak in dw_mipi_dsi_rockchip_host_detach() Date: Wed, 16 Sep 2026 18:14:26 +0000 Message-Id: <20260916181426.2091074-1-vulab@iscas.ac.cn> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID: zQCowAA3oDqe3KpqlU9vCA--.23663S2 X-Coremail-Antispam: 1UD129KBjvdXoWrtFy8ZF4xCF1rKrWUZF45GFg_yoWkZrX_Kw 1Iqr15Wr4rJ3sxZ3W8C3y3uFZIk3sF9FWIga10vFZxZa9rJr1IqrZ5Aw4YqF17Cay3AFZ7 G3W0qryrCan3WjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb-xFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Gr0_Xr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E14v26F 4UJVW0owAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv 7VC0I7IYx2IY67AKxVWUAVWUtwAv7VC2z280aVAFwI0_Cr0_Gr1UMcvjeVCFs4IE7xkEbV WUJVW8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7Cj xVA2Y2ka0xkIwI1lc7CjxVAaw2AFwI0_Jw0_GFyl42xK82IYc2Ij64vIr41l4I8I3I0E4I kC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWU WwC2zVAF1VAY17CE14v26r1q6r43MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_JF I_Gr1lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4UJVWxJr1lIxAIcVCF04k26cxKx2IYs7xG 6r1j6r1xMIIF0xvEx4A2jsIE14v26F4j6r4UJwCI42IY6I8E87Iv6xkF7I0E14v26F4UJV W0obIYCTnIWIevJa73UjIFyTuYvjfUw5l8UUUUU X-Originating-IP: [36.110.52.2] X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiBwEMA2qqpVh2owAAsh X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260916_111500_895575_300D148B X-CRM114-Status: UNSURE ( 9.19 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The reference to the dual-DSI partner device obtained through dw_mipi_dsi_rockchip_find_second() is never released after removing the partner component. Drop it once component_del() is done. Fixes: cf6d100dd238 ("drm/rockchip: dsi: add dual mipi support") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang --- drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c index 2c1f1c53ddda..7f2d3cd28694 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c @@ -1101,8 +1101,10 @@ static int dw_mipi_dsi_rockchip_host_detach(void *priv_data, struct device *second; second = dw_mipi_dsi_rockchip_find_second(dsi); - if (second && !IS_ERR(second)) + if (second && !IS_ERR(second)) { component_del(second, &dw_mipi_dsi_rockchip_ops); + put_device(second); + } component_del(dsi->dev, &dw_mipi_dsi_rockchip_ops); -- 2.34.1