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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 BE202C433E2 for ; Sat, 29 Aug 2020 05:59:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9C7F320EDD for ; Sat, 29 Aug 2020 05:59:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="iFA+btGd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726903AbgH2F70 (ORCPT ); Sat, 29 Aug 2020 01:59:26 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:32461 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726800AbgH2F7Y (ORCPT ); Sat, 29 Aug 2020 01:59:24 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1598680764; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=JBxLm8OMFKHoxpqehjgR8wTIrJyvPsHzMv6BSVJcvNw=; b=iFA+btGdHoPfDg8UlKEDDr0eesMVHfFeVNEcQfpmMvEfIIIIC6QMG3tY8JiM9WaJKQgXazYl HbnlEeTzsgSzjycovwBt8XHs/Kayo8bFFeR/Qim6BPerlnixm/f3vG03DoxDi5Gd/gAxmZD5 fh7qElGb988wMImma+oXPeKBuuM= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyI1YmJiNiIsICJkZXZpY2V0cmVlQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n03.prod.us-west-2.postgun.com with SMTP id 5f49ee9d6a801be9b26ca30d (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Sat, 29 Aug 2020 05:58:53 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 9780EC43391; Sat, 29 Aug 2020 05:58:53 +0000 (UTC) Received: from wcheng-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: wcheng) by smtp.codeaurora.org (Postfix) with ESMTPSA id D17CBC43387; Sat, 29 Aug 2020 05:58:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org D17CBC43387 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=wcheng@codeaurora.org From: Wesley Cheng To: robh+dt@kernel.org, bjorn.andersson@linaro.org, balbi@kernel.org, gregkh@linuxfoundation.org, agross@kernel.org Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-usb@vger.kernel.org, jackp@codeaurora.org, Wesley Cheng Subject: [RFC v5 4/6] usb: gadget: configfs: Check USB configuration before adding Date: Fri, 28 Aug 2020 22:58:44 -0700 Message-Id: <20200829055846.19034-5-wcheng@codeaurora.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200829055846.19034-1-wcheng@codeaurora.org> References: <20200829055846.19034-1-wcheng@codeaurora.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Ensure that the USB gadget is able to support the configuration being added based on the number of endpoints required from all interfaces. This is for accounting for any bandwidth or space limitations. Signed-off-by: Wesley Cheng --- drivers/usb/gadget/configfs.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index 56051bb97349..7c74c04b1d8c 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -1361,6 +1361,7 @@ static int configfs_composite_bind(struct usb_gadget *gadget, struct usb_function *f; struct usb_function *tmp; struct gadget_config_name *cn; + unsigned long ep_map = 0; if (gadget_is_otg(gadget)) c->descriptors = otg_desc; @@ -1390,7 +1391,28 @@ static int configfs_composite_bind(struct usb_gadget *gadget, list_add(&f->list, &cfg->func_list); goto err_purge_funcs; } + if (f->ss_descriptors) { + struct usb_descriptor_header **d; + + d = f->ss_descriptors; + for (; *d; ++d) { + struct usb_endpoint_descriptor *ep; + int addr; + + if ((*d)->bDescriptorType != USB_DT_ENDPOINT) + continue; + + ep = (struct usb_endpoint_descriptor *)*d; + addr = ((ep->bEndpointAddress & 0x80) >> 3) | + (ep->bEndpointAddress & 0x0f); + set_bit(addr, &ep_map); + } + } } + ret = usb_gadget_check_config(cdev->gadget, ep_map); + if (ret) + goto err_purge_funcs; + usb_ep_autoconfig_reset(cdev->gadget); } if (cdev->use_os_string) { -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project