linux-kernel - Re: [PATCH v3 0/4] rpmsg: char: introduce the rpmsg-raw channel

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Date:   Fri, 2 Jul 2021 11:59:45 +0200
From:   Julien Massot <julien.massot@....bzh>
To:     Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Ohad Ben-Cohen <ohad@...ery.com>,
        Mathieu Poirier <mathieu.poirier@...aro.org>
Cc:     linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com
Subject: Re: [PATCH v3 0/4] rpmsg: char: introduce the rpmsg-raw channel

Hi,

> 
> How to test it:
>    - This series can be applied on git/andersson/remoteproc.git for-next branch (7486f29e5e60)
>      + the "Restructure the rpmsg char to decorrelate the control part" series[3]
> 
> [1] https://patchwork.kernel.org/project/linux-remoteproc/list/?series=475217
> [2] https://patchwork.kernel.org/project/linux-remoteproc/list/?series=505873
> [3] https://patchwork.kernel.org/project/linux-remoteproc/list/?series=483793Just did test this patchset v3 again. With the same protocol

Works for me, /dev/rpmsg0 is created on NS announcement, and removed when stopping the remote processor.
I can do a repeated series of open /read/write/close, and got EBUSY if I try to open it more than once
at a time.

Firmware used for testing is derived from:
https://github.com/zephyrproject-rtos/zephyr/tree/main/samples/subsys/ipc/openamp_rsc_table
with:
#define RPMSG_CHAN_NAME "rpmsg-raw"

Thanks Arnaud for your work.

Tested-by: Julien Massot <julien.massot@....bzh>
-- 
Julien Massot [IoT.bzh]