From patchwork Mon Mar 1 16:13:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 389845 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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 D34E3C433E9 for ; Mon, 1 Mar 2021 17:53:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9BD9865368 for ; Mon, 1 Mar 2021 17:53:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239035AbhCARww (ORCPT ); Mon, 1 Mar 2021 12:52:52 -0500 Received: from mail.kernel.org ([198.145.29.99]:40424 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238561AbhCARqo (ORCPT ); Mon, 1 Mar 2021 12:46:44 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 486E364F5A; Mon, 1 Mar 2021 16:58:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614617931; bh=t5JGzOM7XQbD+lP+H98M51tM4YYq6+btNlal7pCD0Fw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PSZAgxF4IyoWftfRmSjSeAJ5nQhxEc5IH9J18nQ/9T+0687ttXAwGh5uBa/R6KaLq 1TrfrsLV9b/v+UNDK5yLffaXAKN3rOn/9MgRVoGnl2OkiRFtx1may60W2hKwO8lvZe C7LZTDIdcPkE0Ivu4rAZe/Gscd4X6z6UQDijBYzY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Thinh Nguyen Subject: [PATCH 5.4 247/340] usb: dwc3: gadget: Fix setting of DEPCFG.bInterval_m1 Date: Mon, 1 Mar 2021 17:13:11 +0100 Message-Id: <20210301161100.445939433@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161048.294656001@linuxfoundation.org> References: <20210301161048.294656001@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Thinh Nguyen commit a1679af85b2ae35a2b78ad04c18bb069c37330cc upstream. Valid range for DEPCFG.bInterval_m1 is from 0 to 13, and it must be set to 0 when the controller operates in full-speed. See the programming guide for DEPCFG command section 3.2.2.1 (v3.30a). Fixes: 72246da40f37 ("usb: Introduce DesignWare USB3 DRD Driver") Cc: Signed-off-by: Thinh Nguyen Link: https://lore.kernel.org/r/3f57026f993c0ce71498dbb06e49b3a47c4d0265.1612820995.git.Thinh.Nguyen@synopsys.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/gadget.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -593,7 +593,17 @@ static int dwc3_gadget_set_ep_config(str params.param0 |= DWC3_DEPCFG_FIFO_NUMBER(dep->number >> 1); if (desc->bInterval) { - params.param1 |= DWC3_DEPCFG_BINTERVAL_M1(desc->bInterval - 1); + u8 bInterval_m1; + + /* + * Valid range for DEPCFG.bInterval_m1 is from 0 to 13, and it + * must be set to 0 when the controller operates in full-speed. + */ + bInterval_m1 = min_t(u8, desc->bInterval - 1, 13); + if (dwc->gadget.speed == USB_SPEED_FULL) + bInterval_m1 = 0; + + params.param1 |= DWC3_DEPCFG_BINTERVAL_M1(bInterval_m1); dep->interval = 1 << (desc->bInterval - 1); }