linux-kernel - Re: [PATCH v3 2/5] phy: realtek: usb: Add driver for the Realtek SoC USB 2.0 PHY

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Message-ID: <f2e17e0e-9c2e-3693-54fa-de3ba5eac846@linaro.org>
Date:   Thu, 8 Jun 2023 09:15:04 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Stanley Chang[昌育德] 
        <stanley_chang@...ltek.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Michael Grzeschik <m.grzeschik@...gutronix.de>,
        Mathias Nyman <mathias.nyman@...ux.intel.com>,
        Bagas Sanjaya <bagasdotme@...il.com>,
        Matthias Kaehlcke <mka@...omium.org>,
        Ray Chi <raychi@...gle.com>,
        Flavio Suligoi <f.suligoi@...m.it>,
        "linux-phy@...ts.infradead.org" <linux-phy@...ts.infradead.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>
Subject: Re: [PATCH v3 2/5] phy: realtek: usb: Add driver for the Realtek SoC
 USB 2.0 PHY

On 08/06/2023 08:59, Stanley Chang[昌育德] wrote:
> Hi Krzysztof,
> 
> 
>> I commented on your second patch, but everything is applicable here as well.
>> You have many useless debug messages. Many incorrect or useless
>> "if() return" which point to broken driver design (e.g. concurrent access to half
>> initialized structures where you substitute lack of synchronization with
>> incorrect "if() return"). Undocumented user interface is one more big trouble.
>>
>> I doubt you run checkpatch on this (be sure to run it with --strict and fix almost
>> everything).
>>
>>
> 1. I use checkpatch but without --strict. I will add it add and check again.

Around 300 issues pointed out...

> 2. Do the debugfs interfaces need to provide a document?
> I don't find any reference about this.

Not sure if we have it in docs, but it is discussed every now and then...

https://lore.kernel.org/all/CAMuHMdUaugQ5+Zhmg=oe=X2wvhazMiT=K-su0EJYKzD4Hdyn3Q@mail.gmail.com/
https://lore.kernel.org/all/2023060209-scouts-affection-f54d@gregkh/



Best regards,
Krzysztof