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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CB0EAC433EF for ; Mon, 15 Nov 2021 18:24:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B2813634E0 for ; Mon, 15 Nov 2021 18:24:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241160AbhKOS1j (ORCPT ); Mon, 15 Nov 2021 13:27:39 -0500 Received: from mail.kernel.org ([198.145.29.99]:46728 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238185AbhKORdj (ORCPT ); Mon, 15 Nov 2021 12:33:39 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id A6FD361BFE; Mon, 15 Nov 2021 17:22:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1636996924; bh=YkW54Ki9Rm7PI7jJAHMIiMXvoahIDOnYIWMdyhs4yPA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=w/q4xq7LXWtiwAI+vVPiGE+C6aMv4JTd4zM94k84mSrZhxk2LOlP3Au1ss4j9vPje XnPF/0s72+bHoL8CQxu7FSoF41PXXUbR8gHD8GaG/RdF7RJPNHRCjUM18uC1vcppTg rPmvePqXfWcfp2tpFo6XwC7a1skA1RHM6izYYNek= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andrej Shadura , Jiri Kosina , Sasha Levin Subject: [PATCH 5.4 285/355] HID: u2fzero: properly handle timeouts in usb_submit_urb Date: Mon, 15 Nov 2021 18:03:29 +0100 Message-Id: <20211115165322.947265420@linuxfoundation.org> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211115165313.549179499@linuxfoundation.org> References: <20211115165313.549179499@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andrej Shadura [ Upstream commit 43775e62c4b784f44a159e13ba80e6146a42d502 ] The wait_for_completion_timeout function returns 0 if timed out or a positive value if completed. Hence, "less than zero" comparison always misses timeouts and doesn't kill the URB as it should, leading to re-sending it while it is active. Fixes: 42337b9d4d95 ("HID: add driver for U2F Zero built-in LED and RNG") Signed-off-by: Andrej Shadura Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin --- drivers/hid/hid-u2fzero.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hid/hid-u2fzero.c b/drivers/hid/hid-u2fzero.c index 94f78ffb76d04..67ae2b18e33ac 100644 --- a/drivers/hid/hid-u2fzero.c +++ b/drivers/hid/hid-u2fzero.c @@ -132,7 +132,7 @@ static int u2fzero_recv(struct u2fzero_device *dev, ret = (wait_for_completion_timeout( &ctx.done, msecs_to_jiffies(USB_CTRL_SET_TIMEOUT))); - if (ret < 0) { + if (ret == 0) { usb_kill_urb(dev->urb); hid_err(hdev, "urb submission timed out"); } else { -- 2.33.0