linux-kernel - Re: [PATCH v17 3/6] soc: qcom: rpmh: Invalidate SLEEP and WAKE TCSes before flushing new data

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Date:   Mon, 13 Apr 2020 14:17:36 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Maulik Shah <mkshah@...eaurora.org>, bjorn.andersson@...aro.org,
        dianders@...omium.org, evgreen@...omium.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        agross@...nel.org, mka@...omium.org, rnayak@...eaurora.org,
        ilina@...eaurora.org, lsrao@...eaurora.org,
        Maulik Shah <mkshah@...eaurora.org>
Subject: Re: [PATCH v17 3/6] soc: qcom: rpmh: Invalidate SLEEP and WAKE TCSes before flushing new data

Quoting Maulik Shah (2020-04-12 07:50:01)
> TCSes have previously programmed data when rpmh_flush() is called.
> This can cause old data to trigger along with newly flushed.
> 
> Fix this by cleaning SLEEP and WAKE TCSes before new data is flushed.
> 
> With this there is no need to invoke rpmh_rsc_invalidate() call from
> rpmh_invalidate().
> 
> Simplify rpmh_invalidate() by moving invalidate_batch() inside.
> 
> Fixes: 600513dfeef3 ("drivers: qcom: rpmh: cache sleep/wake state requests")
> Signed-off-by: Maulik Shah <mkshah@...eaurora.org>
> Reviewed-by: Douglas Anderson <dianders@...omium.org>
> ---

Reviewed-by: Stephen Boyd <swboyd@...omium.org>