linux-kernel - Re: [V3 1/7] remoteproc: qcom: pas: Add decrypt shutdown support for modem

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Date:   Thu, 7 Jul 2022 16:29:26 +0530
From:   Sibi Sankar <quic_sibis@...cinc.com>
To:     Konrad Dybcio <konrad.dybcio@...ainline.org>,
        <bjorn.andersson@...aro.org>
CC:     <agross@...nel.org>, <mathieu.poirier@...aro.org>,
        <dmitry.baryshkov@...aro.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [V3 1/7] remoteproc: qcom: pas: Add decrypt shutdown support for
 modem

Hey Konrad,
Thanks for taking time to review the series.


On 7/6/22 6:08 PM, Konrad Dybcio wrote:
> 
> 
> On 5.07.2022 14:08, Sibi Sankar wrote:
>> The initial shutdown request to modem on SM8450 SoCs would start the
>> decryption process and will keep returning errors until the modem shutdown
>> is complete. Fix this by retrying shutdowns in fixed intervals.
>>
> I'm sorry, but this message seems a bit cryptic to me.. What
> is being decrypted? How is it related to the shutdown sequence?
> Why does it need to finish first?

I was told some portions of the modem logs in secured modem regions
needs decryption and this needs to be completed before minidump/coredump
are collected.

-Sibi

> 
> Konrad
> 
> [snipped the rest]
>