linux-kernel - Re: [PATCH v3] interconnect: qcom: icc-rpmh: Add BCMs to commit list in pre

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Message-ID: <d39cc8a1-ca52-e902-e761-35e06a67aba9@linaro.org>
Date:   Mon, 11 Apr 2022 21:20:49 -0500
From:   Alex Elder <elder@...aro.org>
To:     Stephen Boyd <swboyd@...omium.org>, djakov@...nel.org,
        okukatla@...eaurora.org, quic_mdtipton@...cinc.com
Cc:     linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Mike Tipton <mdtipton@...eaurora.org>, mka@...omium.org,
        dianders@...omium.org
Subject: Re: [PATCH v3] interconnect: qcom: icc-rpmh: Add BCMs to commit list
 in pre_aggregate

On 4/11/22 2:06 PM, Stephen Boyd wrote:
>> I have a hunch about what might be happening here.  There is
>> some synchronization that must occur between the AP and modem
>> when IPA is starting up.  Until that synchronization step has
>> completed, we can't allow the IPA network device to be opened.
> Is there a commit that implements this? Or how is the synchronization
> done? I can debug more and see if that synchronization is happening.

After testing today it seems maybe my hunch wasn't
the root cause.  If you disagree and I'm missing
something, say so.  I will take a look at that
though--my hunch--to see if the thing I thought
could be causing a problem can actually occur.
If so, I'll figure out a fix.

					-Alex