linux-kernel - Re: [PATCH v3] pci: controller: pci-ftpci100: Release the clock resources

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Date:   Mon, 8 May 2023 14:38:57 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Junyan Ye <yejunyan@...t.edu.cn>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Rob Herring <robh@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Wei Yongjun <weiyongjun1@...wei.com>,
        Andrew Murray <amurray@...goodpenguin.co.uk>,
        hust-os-kernel-patches@...glegroups.com,
        Dongliang Mu <dzm91@...t.edu.cn>, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] pci: controller: pci-ftpci100: Release the clock resources

On Mon, May 8, 2023 at 8:59 AM Christophe JAILLET
<christophe.jaillet@...adoo.fr> wrote:

> completely unrelated to your patch, but this comments state "optional".
> The code below seems to make both clocks mandatory.
>
> Moreover, a few lines later, we have:
>      if (!IS_ERR(p->bus_clk)) {
> which seems to say that bus_clk is optional.
>
> This was introduced by 2eeb02b28579.
>
> Just a guess, but either the comment should be updated, or the code
> modified.

It's fine to make the clocks mandatory, because all Gemini
systems provide these clocks.

But that is good to mention in the commit message as well.

Yours,
Linus Walleij