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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BBD45C43334 for ; Mon, 20 Jun 2022 13:26:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345168AbiFTN0f (ORCPT ); Mon, 20 Jun 2022 09:26:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344697AbiFTNZU (ORCPT ); Mon, 20 Jun 2022 09:25:20 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CCE571AF16; Mon, 20 Jun 2022 06:10:24 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 8DE5C60A6D; Mon, 20 Jun 2022 13:10:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 978B2C3411B; Mon, 20 Jun 2022 13:10:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1655730612; bh=fNMtNd/ZVAeJzffPN0WQglMzH9rYHRFh7UPCRvMC4n4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LFCNu0fetn5kBz6XifhWw3auHQPKiwrrl3TcKf+wO5ELFWlz0yV5XKvXsbbrVyg6A IprPURFOu+zcHFr3Dia3cjXgb98Swg6DKJ3oHrVhW5UpUemUL0sLBRFDJrLfCYcDvU JF49k3U2XHleozDH3D/HfrPPnTRLQ6G20pxnx2wQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, stable , Pawel Laszczak , Jing Leng Subject: [PATCH 5.15 088/106] usb: cdnsp: Fixed setting last_trb incorrectly Date: Mon, 20 Jun 2022 14:51:47 +0200 Message-Id: <20220620124726.993082471@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220620124724.380838401@linuxfoundation.org> References: <20220620124724.380838401@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: stable@vger.kernel.org From: Jing Leng commit 5c7578c39c3fffe85b7d15ca1cf8cf7ac38ec0c1 upstream. When ZLP occurs in bulk transmission, currently cdnsp will set last_trb for the last two TRBs, it will trigger an error "ERROR Transfer event TRB DMA ptr not part of current TD ...". Fixes: e913aada0683 ("usb: cdnsp: Fixed issue with ZLP") Cc: stable Acked-by: Pawel Laszczak Signed-off-by: Jing Leng Link: https://lore.kernel.org/r/20220609021134.1606-1-3090101217@zju.edu.cn Signed-off-by: Greg Kroah-Hartman --- drivers/usb/cdns3/cdnsp-ring.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) --- a/drivers/usb/cdns3/cdnsp-ring.c +++ b/drivers/usb/cdns3/cdnsp-ring.c @@ -1941,13 +1941,16 @@ int cdnsp_queue_bulk_tx(struct cdnsp_dev } if (enqd_len + trb_buff_len >= full_len) { - 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; + if (need_zero_pkt && !zero_len_trb) { + zero_len_trb = true; + } else { + zero_len_trb = false; + field &= ~TRB_CHAIN; + field |= TRB_IOC; + more_trbs_coming = false; + need_zero_pkt = false; + preq->td.last_trb = ring->enqueue; + } } /* Only set interrupt on short packet for OUT endpoints. */ @@ -1962,7 +1965,7 @@ int cdnsp_queue_bulk_tx(struct cdnsp_dev length_field = TRB_LEN(trb_buff_len) | TRB_TD_SIZE(remainder) | TRB_INTR_TARGET(0); - cdnsp_queue_trb(pdev, ring, more_trbs_coming | zero_len_trb, + cdnsp_queue_trb(pdev, ring, more_trbs_coming, lower_32_bits(send_addr), upper_32_bits(send_addr), length_field,