linux-kernel - Re: [RESEND PATCH V4 0/4] Add TIOCM Signals support for RPMSG char devices

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Date:   Tue, 19 May 2020 16:49:13 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Arun Kumar Neelakantam <aneela@...eaurora.org>
Cc:     ohad@...ery.com, bjorn.andersson@...aro.org, clew@...eaurora.org,
        sricharan@...eaurora.org, linux-remoteproc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RESEND PATCH V4 0/4] Add TIOCM Signals support for RPMSG char
 devices

On Wed, May 13, 2020 at 10:41:07AM +0530, Arun Kumar Neelakantam wrote:
> Glink transport support signals to exchange state notification between
> local and remote side clients. Adding support to send/receive the signal
> command and notify the clients through callback and POLL notification.

>From a general point of view it is hard to have an understanding of what this
patchset does and if it is the right solution due to a lack of context.

The cover letter and changelogs are sparse to a point where a
reviewer not familiar with the QC/Glink implementation can't offer much more
than syntactic comments.

Thanks,
Mathieu

> 
> Changes since v3:
> - Correct the TICOMGET case handling as per new rpmsg_get_signals prototype
> - Update the rpmsg_get_signals function header
> 
> Changes since v2:
> - Modify the rpmsg_get_signals function prototype
> 
> Changes since v1:
> - Split the patches as per functional areas like core, char, glink
> - Add set, clear mask for TIOCMSET
> - Merge the char signal callback and POLLPRI patches
> 
> Arun Kumar Neelakantam (4):
>   rpmsg: core: Add signal API support
>   rpmsg: glink: Add support to handle signals command
>   rpmsg: char: Add TIOCMGET/TIOCMSET ioctl support
>   rpmsg: char: Add signal callback and POLLPRI support
> 
>  drivers/rpmsg/qcom_glink_native.c | 126 ++++++++++++++++++++++++++++++++++++++
>  drivers/rpmsg/rpmsg_char.c        |  75 ++++++++++++++++++++++-
>  drivers/rpmsg/rpmsg_core.c        |  41 +++++++++++++
>  drivers/rpmsg/rpmsg_internal.h    |   5 ++
>  include/linux/rpmsg.h             |  26 ++++++++
>  5 files changed, 270 insertions(+), 3 deletions(-)
> 
> -- 
> 2.7.4