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 E180FC982C9 for ; Wed, 16 Sep 2026 18:06:40 +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=DshBT6OPTGY9WxKEbnsLYVHnvuzbjxWIC+QGF/JQ0Ag=; b=0PvdAcbQfkG4brJF9CL9M7tKiN tYONYXp+8FzYOX0vzUpB18l6JXt6kckF3DLN8m3xHGgI76Nd9rMkrXN0y9KkNsLrXi3FxjOIdJyb5 E5Wr87hhjiTfDo0bmmWs2hK/gCb9oLj00Ol4kKq+KTel3cP6FSw8cXpOXa3Eza/xjM1pi+IS6K/UV +aVLem9p/aq837zfL1gYe5fh9toDsIiEy3+M0rUK05loUHRHwkqksvJmVOqgE2FWF3ADnUeRZadmC LwQqS1aaTlaxcRuY8qMVEE2/hmsEonB86J1S/XZNSTHkbCXqy86F9qM6kdnrcuCa3Z/d5hQy1WxU0 ZdhGrUug==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x6u1g-00000009vRh-3nf6; Wed, 16 Sep 2026 18:06:32 +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 1x6u1e-00000009vR0-0xRw; Wed, 16 Sep 2026 18:06:31 +0000 Received: from dfae2b116770.home.arpa (unknown [36.110.52.2]) by APP-05 (Coremail) with SMTP id zQCowABXiEKZ2qpqHS1vCA--.23862S2; Thu, 17 Sep 2026 02:06:17 +0800 (CST) From: Wentao Liang To: airlied@gmail.com Cc: architt@codeaurora.org, bcm-kernel-feedback-list@broadcom.com, dri-devel@lists.freedesktop.org, eric@anholt.net, florian.fainelli@broadcom.com, jesszhan0024@gmail.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, neil.armstrong@linaro.org, simona@ffwll.ch, treding@nvidia.com, tzimmermann@suse.de, Wentao Liang , stable@vger.kernel.org Subject: [PATCH] drm/panel: Fix node reference leak in rpi_touchscreen_probe() Date: Wed, 16 Sep 2026 18:05:49 +0000 Message-Id: <20260916180549.2090497-1-vulab@iscas.ac.cn> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID: zQCowABXiEKZ2qpqHS1vCA--.23862S2 X-Coremail-Antispam: 1UD129KBjvdXoWrKr4ktrW5ZryUXw1rKw1rWFg_yoWkArXEkr yFqF9rXr1UJFyDur17A3ZxArsakFn8urWfAa18ta4Sk347urnrXayfW34UXr1DGF4jyr98 Xw17XF1FgrsrGjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb-xFF20E14v26ryj6rWUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E14v26F 4UJVW0owAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv 7VC0I7IYx2IY67AKxVWUtVWrXwAv7VC2z280aVAFwI0_Cr0_Gr1UMcvjeVCFs4IE7xkEbV WUJVW8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7Cj xVA2Y2ka0xkIwI1lc7CjxVAaw2AFwI0_GFv_Wryl42xK82IYc2Ij64vIr41l4I8I3I0E4I kC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWU WwC2zVAF1VAY17CE14v26r4a6rW5MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_JF I_Gr1lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4UJVWxJr1lIxAIcVCF04k26cxKx2IYs7xG 6r1j6r1xMIIF0xvEx4A2jsIE14v26F4j6r4UJwCI42IY6I8E87Iv6xkF7I0E14v26F4UJV W0obIYCTnIWIevJa73UjIFyTuYvjTRRD7VDUUUU X-Originating-IP: [36.110.52.2] X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiCRUMA2qqozV7RgAAs4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260916_110630_635456_15D043C4 X-CRM114-Status: UNSURE ( 8.08 ) 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 of_graph_get_remote_port() returns a reference to the remote port node. On the success path that reference is passed to the registered DSI device and released with it, but if mipi_dsi_device_register_full() fails the reference is never dropped. Release it on the error path. Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang --- drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c index dc4bb8ad9131..c14776561623 100644 --- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c +++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c @@ -428,6 +428,7 @@ static int rpi_touchscreen_probe(struct i2c_client *i2c) if (IS_ERR(ts->dsi)) { dev_err(dev, "DSI device registration failed: %ld\n", PTR_ERR(ts->dsi)); + of_node_put(info.node); return PTR_ERR(ts->dsi); } -- 2.34.1