linux-kernel - Re: [PATCH] rpmsg: glink: use only lower 16-bits of param2 for CMD

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Message-ID: <8b050bcb-640d-4443-ca31-787ec5c02a7d@marek.ca>
Date: Mon, 7 Oct 2024 09:19:05 -0400
From: Jonathan Marek <jonathan@...ek.ca>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: linux-arm-msm@...r.kernel.org, Bjorn Andersson <andersson@...nel.org>,
 Mathieu Poirier <mathieu.poirier@...aro.org>,
 Sricharan Ramabadhran <quic_srichara@...cinc.com>,
 Arun Kumar Neelakantam <quic_aneela@...cinc.com>,
 "open list:REMOTE PROCESSOR MESSAGING (RPMSG) SUBSYSTEM"
 <linux-remoteproc@...r.kernel.org>, open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] rpmsg: glink: use only lower 16-bits of param2 for
 CMD_OPEN name length

On 10/7/24 9:16 AM, Dmitry Baryshkov wrote:
> On Mon, Oct 07, 2024 at 12:47:22AM GMT, Jonathan Marek wrote:
>> The name len field of the CMD_OPEN packet is only 16-bits and the upper
>> 16-bits of "param2" are a different field, which can be nonzero in certain
>> situations, and CMD_OPEN packets can be unexpectedly dropped because of
>> this.
> 
> Any idea about the upper 16 bits? Should we care about that data too?
> 

Its a "prio" value, it should be OK to ignore it.