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Thu, 27 Nov 2025 08:23:13 -0800 (PST) Date: Thu, 27 Nov 2025 09:23:10 -0700 From: Mathieu Poirier To: Shenwei Wang Cc: Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Jonathan Corbet , Linus Walleij , Bartosz Golaszewski , Pengutronix Kernel Team , Fabio Estevam , Peng Fan , "linux-remoteproc@vger.kernel.org" , "devicetree@vger.kernel.org" , "imx@lists.linux.dev" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "linux-doc@vger.kernel.org" , dl-linux-imx Subject: Re: [PATCH v5 2/5] remoteproc: imx_rproc: Populate devices under "rpmsg" subnode Message-ID: References: <20251104203315.85706-1-shenwei.wang@nxp.com> <20251104203315.85706-3-shenwei.wang@nxp.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Wed, Nov 26, 2025 at 09:46:38PM +0000, Shenwei Wang wrote: > > > > -----Original Message----- > > From: Mathieu Poirier > > Sent: Wednesday, November 26, 2025 12:54 PM > > To: Shenwei Wang > > Cc: Bjorn Andersson ; Rob Herring ; > > Krzysztof Kozlowski ; Conor Dooley > > ; Shawn Guo ; Sascha Hauer > > ; Jonathan Corbet ; Linus Walleij > > ; Bartosz Golaszewski ; Pengutronix > > Kernel Team ; Fabio Estevam ; > > Peng Fan ; linux-remoteproc@vger.kernel.org; > > devicetree@vger.kernel.org; imx@lists.linux.dev; linux-arm- > > kernel@lists.infradead.org; linux-kernel@vger.kernel.org; linux- > > doc@vger.kernel.org; dl-linux-imx > > Subject: [EXT] Re: [PATCH v5 2/5] remoteproc: imx_rproc: Populate devices > > under "rpmsg" subnode > > > + > > > + drvdata = dev_get_drvdata(&rpdev->dev); > > > + if (drvdata && drvdata->rx_callback) > > > + return drvdata->rx_callback(rpdev, data, len, priv, > > > + src); > > > + > > > + return 0; > > > +} > > > + > > > +static void imx_rpmsg_endpoint_remove(struct rpmsg_device *rpdev) { > > > + of_platform_depopulate(&rpdev->dev); > > > +} > > > + > > > +static int imx_rpmsg_endpoint_probe(struct rpmsg_device *rpdev) { > > > > Where does the rpmsg_device come from? Usually there is a call to > > rpmsg_register_device() and I don't see it anywhere in this patchset. I also don't > > see a link to the remote processor. I can't continue with this set for as long as I > > don't have this information. > > > > It is in the function below named imx_of_rpmsg_register_rpdriver. > The function below calls register_rpmsg_driver(), not rpmsg_register_device(). I still don't know where @rpdev comes from. > Thanks, > Shenwei > > > > + > > > +static int imx_of_rpmsg_register_rpdriver(struct device_node *channel, > > > + struct device *dev, int idx) { > > > + struct imx_rpmsg_driver_data *driver_data; > > > + struct imx_rpmsg_driver *rp_driver; > > > + struct rpmsg_device_id *rpdev_id; > > > + > > > + rpdev_id = devm_kzalloc(dev, sizeof(*rpdev_id) * 2, GFP_KERNEL); > > > + if (!rpdev_id) > > > + return -ENOMEM; > > > + > > > + strscpy(rpdev_id[0].name, channel_device_map[idx][0], > > > + RPMSG_NAME_SIZE); > > > + > > > + rp_driver = devm_kzalloc(dev, sizeof(*rp_driver), GFP_KERNEL); > > > + if (!rp_driver) > > > + return -ENOMEM; > > > + > > > + driver_data = devm_kzalloc(dev, sizeof(*driver_data), GFP_KERNEL); > > > + if (!driver_data) > > > + return -ENOMEM; > > > + > > > + driver_data->rproc_name = dev->of_node->name; > > > + driver_data->channel_node = channel; > > > + driver_data->map_idx = idx; > > > + > > > + rp_driver->rpdrv.drv.name = channel_device_map[idx][0]; > > > + rp_driver->rpdrv.id_table = rpdev_id; > > > + rp_driver->rpdrv.probe = imx_rpmsg_endpoint_probe; > > > + rp_driver->rpdrv.remove = imx_rpmsg_endpoint_remove; > > > + rp_driver->rpdrv.callback = imx_rpmsg_endpoint_cb; > > > + rp_driver->driver_data = driver_data; > > > + > > > + register_rpmsg_driver(&rp_driver->rpdrv); > > > + > > > + return 0; > > > +}