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 X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DB922C433E0 for ; Tue, 9 Jun 2020 17:51:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ABB44207C3 for ; Tue, 9 Jun 2020 17:51:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591725087; bh=kHbF7dQB4zmuZlfQj/yZ2VSfYpejGVU5Sw80Gp28Tec=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=S3TW3qz+Q+A9fzYXVTDXgfsOEJ/lDBdnOXLChWDpV/cVZemJ3F5Jdoa4H03wiRwy+ IENk5AU0XLbt6APToH08yT8ypAJLZ4sg47oZyUVSUbR2FvpuLqRm1GBrGpdgyyoERQ bOIJ34GiOft+Z8DA2RdcfBCQJP/juNhbCW8RFbuQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732825AbgFIRv1 (ORCPT ); Tue, 9 Jun 2020 13:51:27 -0400 Received: from mail.kernel.org ([198.145.29.99]:40202 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732806AbgFIRvW (ORCPT ); Tue, 9 Jun 2020 13:51:22 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B593F20734; Tue, 9 Jun 2020 17:51:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591725082; bh=kHbF7dQB4zmuZlfQj/yZ2VSfYpejGVU5Sw80Gp28Tec=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zXrBZ3w5LBWbNArhzQ9bBo5yEc5qnDOgKBK7tC/Ps4bPXer+P/xpCCA2edYuR1Bbl JZLYcfSJ47gA7u2DUgsvT6VZT+QhJ6F2CStRWJLU2NwJnptqHMpBHXD/rJFKZao2Mz Bz6HTxBA7AfKBYR1sk1F5t5QONGG1MOjVz9tyDAM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Oliver Neukum , Jean Rene Dawin Subject: [PATCH 4.19 17/25] CDC-ACM: heed quirk also in error handling Date: Tue, 9 Jun 2020 19:45:07 +0200 Message-Id: <20200609174050.594824583@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200609174048.576094775@linuxfoundation.org> References: <20200609174048.576094775@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Oliver Neukum commit 97fe809934dd2b0b37dfef3a2fc70417f485d7af upstream. If buffers are iterated over in the error case, the lower limits for quirky devices must be heeded. Signed-off-by: Oliver Neukum Reported-by: Jean Rene Dawin Fixes: a4e7279cd1d19 ("cdc-acm: introduce a cool down") Cc: stable Link: https://lore.kernel.org/r/20200526124420.22160-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -590,7 +590,7 @@ static void acm_softint(struct work_stru } if (test_and_clear_bit(ACM_ERROR_DELAY, &acm->flags)) { - for (i = 0; i < ACM_NR; i++) + for (i = 0; i < acm->rx_buflimit; i++) if (test_and_clear_bit(i, &acm->urbs_in_error_delay)) acm_submit_read_urb(acm, i, GFP_NOIO); }