linux-kernel - Re: [PATCH v14 5/6] soc: qcom: rpmh-rsc: Clear active mode configuration for wake TCS

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Message-ID: <CAD=FV=WvMe4xqGTH=pU8TL1FWN9BBkp0EOkxasdBsC51299fJA@mail.gmail.com>
Date:   Thu, 26 Mar 2020 11:20:45 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Maulik Shah <mkshah@...eaurora.org>
Cc:     Stephen Boyd <swboyd@...omium.org>,
        Evan Green <evgreen@...omium.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Andy Gross <agross@...nel.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Lina Iyer <ilina@...eaurora.org>, lsrao@...eaurora.org,
        "Raju P.L.S.S.S.N" <rplsssn@...eaurora.org>
Subject: Re: [PATCH v14 5/6] soc: qcom: rpmh-rsc: Clear active mode
 configuration for wake TCS

Hi,

On Thu, Mar 26, 2020 at 10:38 AM Maulik Shah <mkshah@...eaurora.org> wrote:
>
> From: "Raju P.L.S.S.S.N" <rplsssn@...eaurora.org>
>
> For RSCs that have sleep & wake TCS but no dedicated active TCS, wake
> TCS can be re-purposed to send active requests. Once the active requests
> are sent and response is received, the active mode configuration needs
> to be cleared so that controller can use wake TCS for sending wake
> requests.
>
> Introduce enable_tcs_irq() to enable completion IRQ for repurposed TCSes.
>
> Fixes: 2de4b8d33eab (drivers: qcom: rpmh-rsc: allow active requests from wake TCS)
> Signed-off-by: Raju P.L.S.S.S.N <rplsssn@...eaurora.org>
> [mkshah: call enable_tcs_irq() within drv->lock, update commit message]
> Signed-off-by: Maulik Shah <mkshah@...eaurora.org>
> ---
>  drivers/soc/qcom/rpmh-rsc.c | 77 +++++++++++++++++++++++++++++++--------------
>  1 file changed, 54 insertions(+), 23 deletions(-)

I was writing my review of v1 at the same time you sent this.  Looks
like your patch does address the most important piece of feedback I
had (adjusting the interrupt enable under spinlock), but some of the
other feedback might be nice to incorporate:

https://lore.kernel.org/r/CAD=FV=XmBQb8yfx14T-tMQ68F-h=3UHog744b3X3JZViu15+4g@mail.gmail.com

-Doug