linux-kernel - Re: [PATCH v4 2/2] firmware: arm_scmi: Augment SMC/HVC to allow optional interrupt

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Date:   Wed, 6 Jan 2021 09:30:53 +0000
From:   Sudeep Holla <sudeep.holla@....com>
To:     Jim Quinlan <jim2101024@...il.com>
Cc:     Jim Quinlan <james.quinlan@...adcom.com>,
        Sudeep Holla <sudeep.holla@....com>,
        Florian Fainelli <f.fainelli@...il.com>,
        bcm-kernel-feedback-list <bcm-kernel-feedback-list@...adcom.com>,
        "open list:SYSTEM CONTROL & POWER/MANAGEMENT INTERFACE Mes..." 
        <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 2/2] firmware: arm_scmi: Augment SMC/HVC to allow
 optional interrupt

On Tue, Jan 05, 2021 at 01:32:49PM -0500, Jim Quinlan wrote:

[...]

>
> I don't think that is the case;  the bottom routine,
> do_wait_for_common(), decrements the x->done after a completion (which
> does an increment).  Regardless, I think it is prudent to add the
> reinit patch you've provided below.
>

Ah right, but I will add that.

> BTW, one thing I could have done was incorporate the timeout value but
> I thought that since this is the "fast" call we shouldn't be timing
> out at all.
>

Agreed, we can add it later. However it is not related to fast call, it is
more for protection against failure of delivery of interrupt from the platform
or any firmware responsible IMO.

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I am assuming this was unintentional and ignoring. If not disregard my
response. Otherwise you may need to fix your mail server.

--
Regards,
Sudeep