Received: by 2002:a05:6a10:f347:0:0:0:0 with SMTP id d7csp298877pxu; Tue, 1 Dec 2020 11:32:49 -0800 (PST) X-Google-Smtp-Source: ABdhPJx9sjmij6Jj+NSIWfzd6fSy1pZdjQqKiaz+k4Z0zzgYVIS7Mv2Voj13uSeZ+/EIWLTiokZI X-Received: by 2002:a17:906:c24b:: with SMTP id bl11mr4560586ejb.3.1606851168908; Tue, 01 Dec 2020 11:32:48 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1606851168; cv=none; d=google.com; s=arc-20160816; b=YQE4YsO0T74QL/YysshHWlYby4b+CzFnhy68m1wCQ2piwR9Zm/jaNUrARuI3LwSCEm xAZ8Z8bbIjAv87uC0kuV6q9suu0N2KpJ8BlItQEcS1juehkPphf+xYCNtIRaEIyUmLpP W7YPOPcCkxP+oDUO+hh1YlNxQxQfKW3P0jGoQXljC2c9afPtTSHrL39hpuuLAsDdfcvM O3YKdMWYX4qBJvsOnYR5H6naowhNUX9l/7kllzwPwyGlj6RO2LcYOsqrZMFQOWw7J9q7 RiT3UVA8L5nbbrFLPmJbrpyyAn2t4pAjr79Sfa9xcOJVD/L55Vhv7bwR6MC88LbMwtiS jr+A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date :dkim-signature; bh=5HCY0EeLPQqAcr9+1MDqs5E67oCMbxuIEyvXlfJyzuY=; b=Rdr4pRtnqmDQ+z5E5ly6Nh543KdC87TNadVIUSFq/FXj8nCuuZTV3BE2aBRvNhNT4I 9Qpl51jCiy/hfTNm/Tr2X8uZgoVXDPV9ttOv0PwgjzVXWd+V59xu1T/O7zae8aaGoVu3 ACLbkJeJFC9/Al+o+gEhADYo0oytH1OcuApAsCBZ5KID1KCyqECIicQ5yk/i2KB+erAh pMP+1f9GJDttyTd+pPs6XvEDHE8QoSadYnO56zcweDd/KP4P5rtWTQ2ehCiGcUAKu6vC 9Eu8iw6XZWIuJMHvqWWgIKtYaY+jZktDYSggeq9ShsD0oWov9YOf+/1xDPr0Ig14WKcY h28g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=0rxIYxed; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id d11si558233eje.298.2020.12.01.11.32.24; Tue, 01 Dec 2020 11:32:48 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=0rxIYxed; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731346AbgLAT3p (ORCPT + 99 others); Tue, 1 Dec 2020 14:29:45 -0500 Received: from mail.kernel.org ([198.145.29.99]:51950 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726148AbgLAT3o (ORCPT ); Tue, 1 Dec 2020 14:29:44 -0500 Received: from kicinski-fedora-pc1c0hjn.DHCP.thefacebook.com (c-67-180-217-166.hsd1.ca.comcast.net [67.180.217.166]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D58BD204EC; Tue, 1 Dec 2020 19:29:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606850943; bh=5HCY0EeLPQqAcr9+1MDqs5E67oCMbxuIEyvXlfJyzuY=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=0rxIYxedEqZVkHYrStm2IIFdREVrVpDCMDuFwhNHVe+8xN9i0vd+8rE19Y2iXw4P1 8K7g9Y/Ct6yjdmVpg61cXIyWxvV91AdN7IIbh6RJqPLxQhYzcETrPJ3lrBAfN/BJoK B7S0623Z+4ylMnZQ8KI0wpl3WQoOFoxK1s9fkOaY= Date: Tue, 1 Dec 2020 11:29:01 -0800 From: Jakub Kicinski To: Hemant Kumar Cc: manivannan.sadhasivam@linaro.org, gregkh@linuxfoundation.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, jhugo@codeaurora.org, bbhatt@codeaurora.org, loic.poulain@linaro.org, netdev@vger.kernel.org, linux-wireless@vger.kernel.org, Kalle Valo Subject: Re: [PATCH v13 0/4] userspace MHI client interface driver Message-ID: <20201201112901.7f13e26c@kicinski-fedora-pc1c0hjn.DHCP.thefacebook.com> In-Reply-To: <1606533966-22821-1-git-send-email-hemantk@codeaurora.org> References: <1606533966-22821-1-git-send-email-hemantk@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 27 Nov 2020 19:26:02 -0800 Hemant Kumar wrote: > This patch series adds support for UCI driver. UCI driver enables userspace > clients to communicate to external MHI devices like modem and WLAN. UCI driver > probe creates standard character device file nodes for userspace clients to > perform open, read, write, poll and release file operations. These file > operations call MHI core layer APIs to perform data transfer using MHI bus > to communicate with MHI device. Patch is tested using arm64 based platform. Wait, I thought this was for modems. Why do WLAN devices need to communicate with user space?