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[68.147.8.254]) by smtp.gmail.com with ESMTPSA id y24sm456127pfn.211.2020.05.13.15.13.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 May 2020 15:13:44 -0700 (PDT) Date: Wed, 13 May 2020 16:13:42 -0600 From: Mathieu Poirier To: Arun Kumar Neelakantam Cc: ohad@wizery.com, bjorn.andersson@linaro.org, clew@codeaurora.org, sricharan@codeaurora.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, Andy Gross , "open list:ARM/QUALCOMM SUPPORT" Subject: Re: [PATCH V5 5/5] rpmsg: glink: unregister rpmsg device during endpoint destroy Message-ID: <20200513221342.GC8328@xps15> References: <1589346606-15046-1-git-send-email-aneela@codeaurora.org> <1589346606-15046-6-git-send-email-aneela@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1589346606-15046-6-git-send-email-aneela@codeaurora.org> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org On Wed, May 13, 2020 at 10:40:06AM +0530, Arun Kumar Neelakantam wrote: > Rpmsg device unregister is not happening if channel close is triggered > from local side and causing re-registration of device failures. > > Unregister rpmsg device for local close in endpoint destroy path. > > Signed-off-by: Arun Kumar Neelakantam > --- > drivers/rpmsg/qcom_glink_native.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c > index 0e8a28c0..fc8ef66 100644 > --- a/drivers/rpmsg/qcom_glink_native.c > +++ b/drivers/rpmsg/qcom_glink_native.c > @@ -1207,6 +1207,7 @@ static void qcom_glink_destroy_ept(struct rpmsg_endpoint *ept) > { > struct glink_channel *channel = to_glink_channel(ept); > struct qcom_glink *glink = channel->glink; > + struct rpmsg_channel_info chinfo; > unsigned long flags; > > spin_lock_irqsave(&channel->recv_lock, flags); > @@ -1214,6 +1215,13 @@ static void qcom_glink_destroy_ept(struct rpmsg_endpoint *ept) > spin_unlock_irqrestore(&channel->recv_lock, flags); > > /* Decouple the potential rpdev from the channel */ > + if (channel->rpdev) { If we proceed this way no other channel can have an rpdev. I would hope that unregistration of rpdev would be more symetrical to what is done in patch 03. Thanks, Mathieu > + strncpy(chinfo.name, channel->name, sizeof(chinfo.name)); > + chinfo.src = RPMSG_ADDR_ANY; > + chinfo.dst = RPMSG_ADDR_ANY; > + > + rpmsg_unregister_device(glink->dev, &chinfo); > + } > channel->rpdev = NULL; > > qcom_glink_send_close_req(glink, channel); > @@ -1477,6 +1485,7 @@ static void qcom_glink_rx_close(struct qcom_glink *glink, unsigned int rcid) > > rpmsg_unregister_device(glink->dev, &chinfo); > } > + channel->rpdev = NULL; > > qcom_glink_send_close_ack(glink, channel->rcid); > > -- > 2.7.4