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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 D559AC43603 for ; Fri, 13 Dec 2019 07:21:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A6853214D8 for ; Fri, 13 Dec 2019 07:21:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576221692; bh=1irYrXGOcxexWbuIpAf9P38P6DG0tz6DxNZJDv6EmtE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=ussYYG7PAJp1Qo9ZImOwBTD71x5WSj5Q9qea1hyxMvJKYP2b7/7x2UEukNu1O4DJc B6r1QVnPALnPCPa58bruqbVmYGpvTtHZGI8C9CAUkfZeXbotEb0PI4+hcsBdSz+NPx 8gRlbvxJa2UISxK9m3bzn3e4ADq8aH3yeMIO7btU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725991AbfLMHVb (ORCPT ); Fri, 13 Dec 2019 02:21:31 -0500 Received: from mail.kernel.org ([198.145.29.99]:55030 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725468AbfLMHVb (ORCPT ); Fri, 13 Dec 2019 02:21:31 -0500 Received: from localhost (unknown [84.241.199.142]) (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 AF17A22527; Fri, 13 Dec 2019 07:21:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576221690; bh=1irYrXGOcxexWbuIpAf9P38P6DG0tz6DxNZJDv6EmtE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=nK0mkKVmXw7yPAns6tFG57mYIF/DC4ECaDxa6MTMHPSLqnk+MSMsR085zVutvYQAV 7UYPqnsEhYcTghhvcofVsrcuPD2B/7IRgn+8EPaWeCWXZbUDRoQSgvL7oOtB+XzUcm pjE/UUBFae5wZF8Yqo2aWF/lI+X0Txh4bbAcpKTM= Date: Fri, 13 Dec 2019 08:21:27 +0100 From: Greg KH To: Pierre-Louis Bossart Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, tiwai@suse.de, broonie@kernel.org, vkoul@kernel.org, jank@cadence.com, srinivas.kandagatla@linaro.org, slawomir.blauciak@intel.com, Bard liao , Rander Wang , Ranjani Sridharan , Sanyog Kale Subject: Re: [PATCH v4 06/15] soundwire: add support for sdw_slave_type Message-ID: <20191213072127.GD1750354@kroah.com> References: <20191213050409.12776-1-pierre-louis.bossart@linux.intel.com> <20191213050409.12776-7-pierre-louis.bossart@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191213050409.12776-7-pierre-louis.bossart@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Dec 12, 2019 at 11:04:00PM -0600, Pierre-Louis Bossart wrote: > Currently the bus does not have any explicit support for master > devices. > > First add explicit support for sdw_slave_type and error checks if this type > is not set. > > In follow-up patches we can add support for the sdw_md_type (md==Master > Device), following the Grey Bus example. How are you using greybus as an example of "master devices"? All you are doing here is setting the type of the existing devices, right? > > Signed-off-by: Pierre-Louis Bossart > --- > drivers/soundwire/bus_type.c | 16 ++++++++++++---- > drivers/soundwire/slave.c | 7 ++++++- > include/linux/soundwire/sdw_type.h | 6 ++++++ > 3 files changed, 24 insertions(+), 5 deletions(-) > > diff --git a/drivers/soundwire/bus_type.c b/drivers/soundwire/bus_type.c > index 9a0fd3ee1014..bbdedce5eb26 100644 > --- a/drivers/soundwire/bus_type.c > +++ b/drivers/soundwire/bus_type.c > @@ -49,13 +49,21 @@ int sdw_slave_modalias(const struct sdw_slave *slave, char *buf, size_t size) > > static int sdw_uevent(struct device *dev, struct kobj_uevent_env *env) > { > - struct sdw_slave *slave = to_sdw_slave_device(dev); > + struct sdw_slave *slave; > char modalias[32]; > > - sdw_slave_modalias(slave, modalias, sizeof(modalias)); > + if (is_sdw_slave(dev)) { > + slave = to_sdw_slave_device(dev); > + > + sdw_slave_modalias(slave, modalias, sizeof(modalias)); > > - if (add_uevent_var(env, "MODALIAS=%s", modalias)) > - return -ENOMEM; > + if (add_uevent_var(env, "MODALIAS=%s", modalias)) > + return -ENOMEM; > + } else { > + /* only Slave device type supported */ > + dev_warn(dev, "uevent for unknown Soundwire type\n"); > + return -EINVAL; Right now, this can not happen, right? Not a problem, just trying to understand the sequence of patches here... thanks, greg k-h