From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 C58F130D3EF; Sat, 12 Sep 2026 18:48:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789238883; cv=none; b=o45NHXTasgeO22zUn0+ucq1AA4MAFSpmL28kmfh3gw9EEC/547bGjourYawsPle3xff3RE7H7KgS762lEvlGIsDANo8FtZLOIfcfDZhT28iUVGAKn/nLwmIng7rHdHECbHTb6XUReK/dqzZjvXLYV7rfpTUiMNgJXsj7oD+X1/g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789238883; c=relaxed/simple; bh=2qrGXBvHzYJp1iWQZ9Qc2p+H9/MFEl0r+y9E1cXiCmQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=QZoL97t/qzfnWg6tUW7Bg07FfTNCqxVQRZ3pHucksdp7pQKguFefGlIAm+vtN0+gXKFWKlfVoNvfTef6MbJn9JS0G0ArAa6G4s+1jn0NQz1mc4WcTs/WBf/0EThVsJ8dzCevtw44AlBEy3XQiXUfv3IliyIkAedHSRwHn2Nmumo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=AvhEnfDG; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="AvhEnfDG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C10051F000FF; Sat, 12 Sep 2026 18:48:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789238882; bh=ihVhpyB7Eyo1uVT2J9D3GL1a2dBYZp0sOmaH3JF6u1I=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=AvhEnfDGvbtEhiS8mceLZOpln6D5icrlE3RfSOHC+HCFBGEWTQRf1EEu7uXWjQZcc sVz31TRxkSlgUcHMcjgxgGHMiWEwdHwJ0jCqOWGCxL3HfljYXtGREuMM8Y6q9+5k/U CG6KKaF6d6wJcwOuTnbOrWbET07RFIes4autFAMM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Pengpeng Hou , Nishanth Menon , Sasha Levin Subject: [PATCH 5.15 553/935] soc: ti: knav_qmss: Remove debugfs file on teardown Date: Sat, 12 Sep 2026 08:59:43 +0200 Message-ID: <20260912065539.509267091@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065526.833703348@linuxfoundation.org> References: <20260912065526.833703348@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Pengpeng Hou [ Upstream commit 3c817862759913097f11467ed4ed2bbf974dabaf ] knav_queue_probe() creates the global qmss debugfs file whose show callback reads the global knav_qdev state. knav_queue_remove() tears down the queue manager resources but leaves the debugfs file published. Save the debugfs dentry in struct knav_device and remove it during teardown before the resources used by the show callback are released. While touching the debugfs_create_file() call, spell the unchanged read- only file mode as 0444. Fixes: 41f93af900a2 ("soc: ti: add Keystone Navigator QMSS driver") Signed-off-by: Pengpeng Hou Link: https://patch.msgid.link/20260706144706.96313-1-pengpeng@iscas.ac.cn Signed-off-by: Nishanth Menon Signed-off-by: Sasha Levin --- drivers/soc/ti/knav_qmss.h | 1 + drivers/soc/ti/knav_qmss_queue.c | 7 +++++-- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/soc/ti/knav_qmss.h b/drivers/soc/ti/knav_qmss.h index a01eda720bf6c..44d6976bbafc3 100644 --- a/drivers/soc/ti/knav_qmss.h +++ b/drivers/soc/ti/knav_qmss.h @@ -304,6 +304,7 @@ struct knav_device { struct list_head pools; struct list_head pdsps; struct list_head qmgrs; + struct dentry *debugfs_file; enum qmss_version version; }; diff --git a/drivers/soc/ti/knav_qmss_queue.c b/drivers/soc/ti/knav_qmss_queue.c index c8191b6200947..c1410b97a254c 100644 --- a/drivers/soc/ti/knav_qmss_queue.c +++ b/drivers/soc/ti/knav_qmss_queue.c @@ -1872,8 +1872,9 @@ static int knav_queue_probe(struct platform_device *pdev) goto err; } - debugfs_create_file("qmss", S_IFREG | S_IRUGO, NULL, NULL, - &knav_queue_debug_fops); + knav_qdev->debugfs_file = + debugfs_create_file("qmss", 0444, NULL, NULL, + &knav_queue_debug_fops); device_ready = true; return 0; @@ -1891,6 +1892,8 @@ static int knav_queue_remove(struct platform_device *pdev) struct knav_device *kdev = platform_get_drvdata(pdev); device_ready = false; + debugfs_remove(kdev->debugfs_file); + kdev->debugfs_file = NULL; knav_queue_stop_pdsps(kdev); knav_queue_free_regions(kdev); knav_free_queue_ranges(kdev); -- 2.53.0