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=-18.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 5E26BC4338F for ; Thu, 29 Jul 2021 06:44:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4100561019 for ; Thu, 29 Jul 2021 06:44:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234258AbhG2Goy (ORCPT ); Thu, 29 Jul 2021 02:44:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:39024 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234079AbhG2Gox (ORCPT ); Thu, 29 Jul 2021 02:44:53 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id B9E096103A; Thu, 29 Jul 2021 06:44:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1627541090; bh=T6gQSXvlQBIr+SfzJrppPF5qAK8LmNAlJOUYd4tfaaI=; h=Subject:To:From:Date:From; b=OKKnC7xvAf0USwODCRhRtGrWIJX8+H+5BLW5nKeUAe56Fibr+osqiClNITiw80rLC pIzUNefKMABvh5T9n30MeYX5yg9ldcLD4osAWQekTrE63RzDZZJFyQ69OxnNZ+63dc ToZgIGQSjAplSgJuRZRX2aGsN1blhCNIkRuDaG1k= Subject: patch "usb: cdnsp: Fixed issue with ZLP" added to usb-linus To: pawell@cadence.com, peter.chen@kernel.org, stable@vger.kernel.org From: Date: Thu, 29 Jul 2021 08:44:36 +0200 Message-ID: <1627541076192114@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org This is a note to let you know that I've just added the patch titled usb: cdnsp: Fixed issue with ZLP to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From e913aada06830338633fb8524733b0ad3d38a7c1 Mon Sep 17 00:00:00 2001 From: Pawel Laszczak Date: Wed, 23 Jun 2021 09:27:28 +0200 Subject: usb: cdnsp: Fixed issue with ZLP The condition "if (need_zero_pkt && zero_len_trb)" was always false and it caused that TRB for ZLP was not prepared. Fix causes that after preparing last TRB in TD, the driver prepares additional TD with ZLP when a ZLP is required. Cc: Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") Signed-off-by: Pawel Laszczak Link: https://lore.kernel.org/r/20210623072728.41275-1-pawell@gli-login.cadence.com Signed-off-by: Peter Chen --- drivers/usb/cdns3/cdnsp-ring.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/usb/cdns3/cdnsp-ring.c b/drivers/usb/cdns3/cdnsp-ring.c index 68972746e363..1b1438457fb0 100644 --- a/drivers/usb/cdns3/cdnsp-ring.c +++ b/drivers/usb/cdns3/cdnsp-ring.c @@ -1932,15 +1932,13 @@ int cdnsp_queue_bulk_tx(struct cdnsp_device *pdev, struct cdnsp_request *preq) } if (enqd_len + trb_buff_len >= full_len) { - if (need_zero_pkt && zero_len_trb) { - zero_len_trb = true; - } else { - field &= ~TRB_CHAIN; - field |= TRB_IOC; - more_trbs_coming = false; - need_zero_pkt = false; - preq->td.last_trb = ring->enqueue; - } + if (need_zero_pkt) + zero_len_trb = !zero_len_trb; + + field &= ~TRB_CHAIN; + field |= TRB_IOC; + more_trbs_coming = false; + preq->td.last_trb = ring->enqueue; } /* Only set interrupt on short packet for OUT endpoints. */ @@ -1955,7 +1953,7 @@ int cdnsp_queue_bulk_tx(struct cdnsp_device *pdev, struct cdnsp_request *preq) length_field = TRB_LEN(trb_buff_len) | TRB_TD_SIZE(remainder) | TRB_INTR_TARGET(0); - cdnsp_queue_trb(pdev, ring, more_trbs_coming | need_zero_pkt, + cdnsp_queue_trb(pdev, ring, more_trbs_coming | zero_len_trb, lower_32_bits(send_addr), upper_32_bits(send_addr), length_field, -- 2.32.0