From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932702AbcEKPjM (ORCPT ); Wed, 11 May 2016 11:39:12 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:42047 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932366AbcEKPjJ (ORCPT ); Wed, 11 May 2016 11:39:09 -0400 Subject: Re: [PATCH] rpmsg: Make rpmsg sample selectable To: Bjorn Andersson References: <1462557972-32699-1-git-send-email-bjorn.andersson@linaro.org> <572CEF9B.7090503@ti.com> <20160506221502.GG1256@tuxbot> CC: Ohad Ben-Cohen , , From: Suman Anna Message-ID: <5733521A.5090209@ti.com> Date: Wed, 11 May 2016 10:39:06 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.7.2 MIME-Version: 1.0 In-Reply-To: <20160506221502.GG1256@tuxbot> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/06/2016 05:15 PM, Bjorn Andersson wrote: > On Fri 06 May 12:25 PDT 2016, Suman Anna wrote: > >> Hi Bjorn, >> >> On 05/06/2016 01:06 PM, Bjorn Andersson wrote: >>> rpmsg is not user selectable so the rpmsg sample should not depend on >>> it, as this limits the possibility of compiling the sample client >>> without any other clients. >>> >>> Signed-off-by: Bjorn Andersson >>> --- >>> samples/Kconfig | 3 ++- >>> 1 file changed, 2 insertions(+), 1 deletion(-) >>> >>> diff --git a/samples/Kconfig b/samples/Kconfig >>> index d54f28c6dc5e..61a251e579ed 100644 >>> --- a/samples/Kconfig >>> +++ b/samples/Kconfig >>> @@ -57,7 +57,8 @@ config SAMPLE_KDB >>> >>> config SAMPLE_RPMSG_CLIENT >>> tristate "Build rpmsg client sample -- loadable modules only" >>> - depends on RPMSG && m >>> + select RPMSG >>> + depends on m >> >> Well, I believe this has to do with the fact that we also need to have a >> remoteproc driver enabled, as you cannot have the sample running by >> itself. A remoteproc driver implementing RPMSG would select it, and then >> this sample can be enabled. In fact, I follow this for all rpmsg bus >> drivers. >> > > That does sound backwards though. Remoteproc provides means to control > the life cycle of your remote processor and establish (among other > things) the virtio channels for e.g. rpmsg, but it certainly does not > depend on rpmsg. True, but the boot of a remote processor that supports virtio devices is automatic only when you have the virtio_rpmsg_bus probed because of the link between remoteproc_virtio and virtio_rpmsg_bus. > > As far as I can see there's 8 other types of virtio services supported > and I presume we're supposed to select those based on the device's need. > > > But based on this I believe the correct solution is not to fix the > sample but to make RPMSG selectable in itself. Yeah, agreed. regards Suman