From patchwork Wed Jan 25 14:34:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 13115719 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 06759C54E94 for ; Wed, 25 Jan 2023 14:34:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235469AbjAYOeE (ORCPT ); Wed, 25 Jan 2023 09:34:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35636 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235427AbjAYOeD (ORCPT ); Wed, 25 Jan 2023 09:34:03 -0500 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EC0B92F791; Wed, 25 Jan 2023 06:34:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1674657242; x=1706193242; h=from:to:subject:date:message-id:mime-version: content-transfer-encoding; bh=3kpOMqrQuctFKDrDiGjBznoIROiBQ5QhwWS1ed7ePGE=; b=eeZzmZZYBYFhSOLUPBMGTrUn290Gw7tjfzbXj7edVCgtPzflaliA9F7Z JsPm9p6FG4ke+5D6UsqBZ9vhLYvkNKc/Dr7+yg7mY7qvH+0/eCjkzV7qg znWlIyERyCYGz0MZWx8u0Y8vOfP/HpQC+k704ye+zYVAE6zfYCVhY7JUC peHwuaanJas+O6f1vxpnbFZPXyEYM9DAXTyfTkfCw8gE453wn0FExv4H+ yuBAnHDskgyqaBetW4I5hpA+VoBoPDnMGdDTD3vICjIakqV/YoN30MxNm 88hsV9Qimm2UlmyBqoXMlgfVVtY82qRSsaEcb/DkbgIe3tjo73QFVjrlg g==; X-IronPort-AV: E=McAfee;i="6500,9779,10601"; a="324268176" X-IronPort-AV: E=Sophos;i="5.97,245,1669104000"; d="scan'208";a="324268176" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jan 2023 06:33:58 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10601"; a="805017342" X-IronPort-AV: E=Sophos;i="5.97,245,1669104000"; d="scan'208";a="805017342" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 25 Jan 2023 06:33:57 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id 37B9A165; Wed, 25 Jan 2023 16:34:33 +0200 (EET) From: Andy Shevchenko To: Greg Kroah-Hartman , =?utf-8?b?SsOzIMOBZ2ls?= =?utf-8?b?YSBCaXRzY2g=?= , Andy Shevchenko , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 1/1] usb: gadget: Use correct APIs and data types for UUID handling Date: Wed, 25 Jan 2023 16:34:25 +0200 Message-Id: <20230125143425.85268-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.39.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org We have two types for UUIDs depending on the byte ordering. Instead of explaining how bytes should go over the wire, use dedicated APIs and data types. This removes a confusion over the byte ordering. Signed-off-by: Andy Shevchenko Tested-By: Jó Ágila Bitsch --- drivers/usb/gadget/composite.c | 4 ++-- include/linux/usb/webusb.h | 9 +++------ 2 files changed, 5 insertions(+), 8 deletions(-) diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 8e2603688016..fa7dd6cf014d 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -829,7 +829,7 @@ static int bos_desc(struct usb_composite_dev *cdev) if (cdev->use_webusb) { struct usb_plat_dev_cap_descriptor *webusb_cap; struct usb_webusb_cap_data *webusb_cap_data; - uuid_t webusb_uuid = WEBUSB_UUID; + guid_t webusb_uuid = WEBUSB_UUID; webusb_cap = cdev->req->buf + le16_to_cpu(bos->wTotalLength); webusb_cap_data = (struct usb_webusb_cap_data *) webusb_cap->CapabilityData; @@ -841,7 +841,7 @@ static int bos_desc(struct usb_composite_dev *cdev) webusb_cap->bDescriptorType = USB_DT_DEVICE_CAPABILITY; webusb_cap->bDevCapabilityType = USB_PLAT_DEV_CAP_TYPE; webusb_cap->bReserved = 0; - export_uuid(webusb_cap->UUID, &webusb_uuid); + export_guid(webusb_cap->UUID, &webusb_uuid); if (cdev->bcd_webusb_version != 0) webusb_cap_data->bcdVersion = cpu_to_le16(cdev->bcd_webusb_version); diff --git a/include/linux/usb/webusb.h b/include/linux/usb/webusb.h index b430d84357f3..fe43020b4a48 100644 --- a/include/linux/usb/webusb.h +++ b/include/linux/usb/webusb.h @@ -11,15 +11,12 @@ #include "uapi/linux/usb/ch9.h" /* - * little endian PlatformCapablityUUID for WebUSB + * Little Endian PlatformCapablityUUID for WebUSB * 3408b638-09a9-47a0-8bfd-a0768815b665 - * to identify Platform Device Capability descriptors as referring to WebUSB - * - * the UUID above MUST be sent over the wire as the byte sequence: - * {0x38, 0xB6, 0x08, 0x34, 0xA9, 0x09, 0xA0, 0x47, 0x8B, 0xFD, 0xA0, 0x76, 0x88, 0x15, 0xB6, 0x65}. + * to identify Platform Device Capability descriptors as referring to WebUSB. */ #define WEBUSB_UUID \ - UUID_INIT(0x38b60834, 0xa909, 0xa047, 0x8b, 0xfd, 0xa0, 0x76, 0x88, 0x15, 0xb6, 0x65) + GUID_INIT(0x3408b638, 0x09a9, 0x47a0, 0x8b, 0xfd, 0xa0, 0x76, 0x88, 0x15, 0xb6, 0x65) /* * WebUSB Platform Capability data