From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Cc: Ohad Ben-Cohen <ohad@wizery.com>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Andy Gross <agross@kernel.org>,
linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH v2 11/16] rpmsg: char: check destination address is not null
Date: Mon, 4 Jan 2021 19:03:11 -0600 [thread overview]
Message-ID: <X/O6z6ngPmML3nOD@builder.lan> (raw)
In-Reply-To: <20201222105726.16906-12-arnaud.pouliquen@foss.st.com>
On Tue 22 Dec 04:57 CST 2020, Arnaud Pouliquen wrote:
> The name service announcement is not sent if no endpoint is created by
> default. If the destination address is not precised by the
> application when creating the device (thanks to the RPMsg CTRL interface),
> it is not possible to have a valid RPMsg channel.
>
In the Qualcomm transports, the chinfo.name is used to identify the
channel, so there it's valid to create a endpoint without dst.
Regards,
Bjorn
> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
> ---
> drivers/rpmsg/rpmsg_char.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index 4b0674a2e3e9..8b1928594d10 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -305,6 +305,16 @@ static int rpmsg_chrdev_probe(struct rpmsg_device *rpdev)
> struct device *dev;
> int ret;
>
> + /* There is not ept created by default. As consequence there is not NS
> + * announcement and the destination address has to be set.
> + * this limitation could be solved in future by adding a helper in
> + * rpmsg_ns.
> + */
> + if (rpdev->dst == RPMSG_ADDR_ANY) {
> + dev_err(dev, "destination address invalid (%d)\n", rpdev->dst);
> + return -EINVAL;
> + }
> +
> eptdev = kzalloc(sizeof(*eptdev), GFP_KERNEL);
> if (!eptdev)
> return -ENOMEM;
> --
> 2.17.1
>
next prev parent reply other threads:[~2021-01-05 1:04 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-22 10:57 [PATCH v2 00/16] introduce generic IOCTL interface for RPMsg channels management Arnaud Pouliquen
2020-12-22 10:57 ` [PATCH v2 01/16] rpmsg: introduce RPMsg control driver for channel creation Arnaud Pouliquen
2020-12-22 16:45 ` Randy Dunlap
2021-01-05 0:21 ` Bjorn Andersson
2021-01-21 23:31 ` Mathieu Poirier
2020-12-22 10:57 ` [PATCH v2 02/16] rpmsg: add RPMsg control API to register service Arnaud Pouliquen
2021-01-05 0:34 ` Bjorn Andersson
2021-01-05 16:53 ` Arnaud POULIQUEN
2021-01-21 23:46 ` Mathieu Poirier
2020-12-22 10:57 ` [PATCH v2 03/16] rpmsg: add override field in channel info Arnaud Pouliquen
2020-12-22 10:57 ` [PATCH v2 04/16] rpmsg: ctrl: implement the ioctl function to create device Arnaud Pouliquen
2021-01-05 1:33 ` Bjorn Andersson
2021-01-05 18:07 ` Arnaud POULIQUEN
2021-01-21 23:52 ` Mathieu Poirier
2021-01-22 13:05 ` Arnaud POULIQUEN
2021-01-22 20:59 ` Mathieu Poirier
2021-01-25 10:52 ` Arnaud POULIQUEN
2021-01-29 0:13 ` Mathieu Poirier
2021-01-29 9:45 ` Arnaud POULIQUEN
2020-12-22 10:57 ` [PATCH v2 05/16] rpmsg: ns: initialize channel info override field Arnaud Pouliquen
2021-01-05 0:38 ` Bjorn Andersson
2021-01-05 17:02 ` Arnaud POULIQUEN
2020-12-22 10:57 ` [PATCH v2 06/16] rpmsg: add helper to register the rpmsg ctrl device Arnaud Pouliquen
2020-12-22 10:57 ` [PATCH v2 07/16] rpmsg: char: clean up rpmsg class Arnaud Pouliquen
2021-01-05 0:47 ` Bjorn Andersson
2021-01-05 0:54 ` Bjorn Andersson
2021-01-05 17:03 ` Arnaud POULIQUEN
2020-12-22 10:57 ` [PATCH v2 08/16] rpmsg: char: make char rpmsg a rpmsg device without the control part Arnaud Pouliquen
2020-12-22 10:57 ` [PATCH v2 09/16] rpmsg: char: register RPMsg raw service to the ioctl interface Arnaud Pouliquen
2020-12-22 10:57 ` [PATCH v2 10/16] rpmsg: char: allow only one endpoint per device Arnaud Pouliquen
2021-01-05 0:59 ` Bjorn Andersson
2021-01-05 17:05 ` Arnaud POULIQUEN
2020-12-22 10:57 ` [PATCH v2 11/16] rpmsg: char: check destination address is not null Arnaud Pouliquen
2021-01-05 1:03 ` Bjorn Andersson [this message]
2021-01-05 17:08 ` Arnaud POULIQUEN
2020-12-22 10:57 ` [PATCH v2 12/16] rpmsg: virtio: use the driver_override in channel creation ops Arnaud Pouliquen
2020-12-22 10:57 ` [PATCH v2 13/16] rpmsg: virtio: probe the rpmsg_ctl device Arnaud Pouliquen
2020-12-29 4:16 ` kernel test robot
2021-01-04 12:59 ` Dan Carpenter
2020-12-22 10:57 ` [PATCH v2 14/16] rpmsg: glink: add create and release rpmsg channel ops Arnaud Pouliquen
2021-01-05 1:08 ` Bjorn Andersson
2021-01-05 17:29 ` Arnaud POULIQUEN
2020-12-22 10:57 ` [PATCH v2 15/16] rpmsg: smd: " Arnaud Pouliquen
2020-12-22 10:57 ` [PATCH v2 16/16] rpmsg: replace rpmsg_chrdev_register_device use Arnaud Pouliquen
2021-01-05 1:10 ` Bjorn Andersson
2021-01-04 23:03 ` [PATCH v2 00/16] introduce generic IOCTL interface for RPMsg channels management Bjorn Andersson
2021-01-05 16:59 ` Arnaud POULIQUEN
2021-01-13 20:31 ` Mathieu Poirier
2021-01-14 9:05 ` Arnaud POULIQUEN
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