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 322B744AB99; Tue, 21 Jul 2026 21:14:12 +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=1784668453; cv=none; b=E2UxXFE+NEwHuQhFYyyBbP9w1Q+6OWFa8xoSA/QLKk4TrKs4nvEO49tifTStwsyfiJEtTx1s5aJbSzwSTEx6uSR726AaIIcntQlhuoB6kkq63SPLt7AyVp/XBJi4e/6eQf0hJsRFIjkd+zrlsHBymhS+8IGVt2X/sncESZIsMbM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784668453; c=relaxed/simple; bh=U5ZFD+L+XcTJM663skpmY8TFK6O3ou/86SXxraqy0m8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XpT3fwH4dQbNzqhJR9HnEJYUX1TANay8a7VkNi0BnojA6NmwKuWNB9gpArQIsQYAgG+g/npl38lKJHEnR6v7Z4vmNBebziEkrl7h9+mY4GtgDRX98+UJ/uDWDyrmBdr54G2PPpBoV4b+yHiIjgCh00Nrj+15hRcSyHGWVzV8fFI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=xguUtQGz; 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="xguUtQGz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9743E1F000E9; Tue, 21 Jul 2026 21:14:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784668452; bh=/zPYQAOZdDpWSTXs2EvK+VfYo5WRKtJhrpmGVp7/N5U=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=xguUtQGz6wC7RIaeARAJAyR3/qziMv1ynyX34g0SiTM3RToMTXAT1Wi73Ttmqvdv5 MEFvN5EMvK4rn1GcsSG0qVTDAJP5TN4hQyJEraq6Vt0ymNuLSFpLlpEx7E96jcIKKA omdu3vhNSPlPADwwT2mZaw/PQSfDjNG1YE6Njugo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Haoxiang Li Subject: [PATCH 6.1 0180/1067] usb: mtu3: unmap request DMA on queue failure Date: Tue, 21 Jul 2026 17:13:01 +0200 Message-ID: <20260721152428.617486049@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152424.521567757@linuxfoundation.org> References: <20260721152424.521567757@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 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Haoxiang Li commit 0bddda5a11665c210339de76d27ebbd1a2e0b43c upstream. mtu3_gadget_queue() maps the request before checking whether the QMU GPD ring can accept another transfer. the request is returned with -EAGAIN before it is linked on the endpoint request list if mtu3_prepare_transfer() fails. Normal completion and dequeue paths unmap requests from mtu3_req_complete(), but this error path never reaches that helper, so the DMA mapping is left active. Unmap the request before returning from the failed queue path. Fixes: df2069acb005 ("usb: Add MediaTek USB3 DRD driver") Cc: stable Signed-off-by: Haoxiang Li Link: https://patch.msgid.link/20260623093325.2105323-1-haoxiang_li2024@163.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/mtu3/mtu3_gadget.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/usb/mtu3/mtu3_gadget.c +++ b/drivers/usb/mtu3/mtu3_gadget.c @@ -305,6 +305,7 @@ static int mtu3_gadget_queue(struct usb_ if (mtu3_prepare_transfer(mep)) { ret = -EAGAIN; + usb_gadget_unmap_request(&mtu->g, req, mep->is_in); goto error; }