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 A71AEC433F5 for ; Mon, 21 Mar 2022 09:14:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345756AbiCUJP5 (ORCPT ); Mon, 21 Mar 2022 05:15:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55418 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345750AbiCUJPy (ORCPT ); Mon, 21 Mar 2022 05:15:54 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C9B4033E8C; Mon, 21 Mar 2022 02:14:28 -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 214BC611FA; Mon, 21 Mar 2022 09:14:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E28BDC340E8; Mon, 21 Mar 2022 09:14:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1647854067; bh=QR1O5XKlJpJuPjR5SVi4jtYcguILB+hAXNad3vIFDNw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=I6UwOlDq+7pdOBZyFL7gFWPy22etBVprVoqB3Ikka5a6K7b4E4teeWa2X+iRTWJ1z Daw54agLSZjz9NWrsFy72fr7gCImpGEXcvGCOmZYSGkkVCS2DuB25hzGsuUKUw18w5 Gyo7ypU/wIwnxd3gKmBS56iRRcf3T5hYc4vau+us= Date: Mon, 21 Mar 2022 10:14:23 +0100 From: Greg Kroah-Hartman To: Daehwan Jung Cc: Mathias Nyman , "open list:USB XHCI DRIVER" , open list , Howard Yen , Jack Pham , Puma Hsu , "J . Avila" , sc.suh@samsung.com Subject: Re: [PATCH v3 0/4] support USB offload feature Message-ID: References: <1647853194-62147-1-git-send-email-dh10.jung@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1647853194-62147-1-git-send-email-dh10.jung@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 21, 2022 at 05:59:50PM +0900, Daehwan Jung wrote: > This patchset is for USB offload feature, which makes Co-processor to use > some memories of xhci. Especially it's useful for USB Audio scenario. > Audio stream would get shortcut because Co-processor directly write/read > data in xhci memories. It could get speed-up using faster memory like SRAM. > That's why this gives vendors flexibilty of memory management. > Several pathches have been merged in AOSP kernel(android12-5.10) and I put > together and split into 3 patches. Plus let me add user(xhci-exynos) > module to see how user could use it. > > To sum up, it's for providing xhci memories to Co-Processor. > It would cover DCBAA, Device Context, Transfer Ring, Event Ring, ERST. > It needs xhci hooks and to export some xhci symbols. > > Changes in v2 : > - Fix commit message by adding Signed-off-by in each patch. > - Fix conflict on latest. > > Changes in v3 : > - Remove export symbols and xhci hooks which xhci-exynos don't need. > - Modify commit message to clarify why it needs to export symbols. > - Check compiling of xhci-exynos. As I asked for in the previous submission, you MUST have a user for these hooks, otherwise we can not accept them (nor would you WANT us to accept them). Please fix that up and add them to the next submission as we can not do anything with this one. thanks, greg k-h