linux-kernel - Re: [PATCH 2/3] net: ethernet: bgmac: Make IDM register space optional

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Date:   Mon, 17 Jul 2017 15:05:44 -0400
From:   Jon Mason <jon.mason@...adcom.com>
To:     Abhishek Shah <abhishek.shah@...adcom.com>
Cc:     Rafał Miłecki <rafal@...ecki.pl>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Network Development <netdev@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        BCM Kernel Feedback <bcm-kernel-feedback-list@...adcom.com>
Subject: Re: [PATCH 2/3] net: ethernet: bgmac: Make IDM register space optional

On Mon, Jul 17, 2017 at 2:37 PM, Abhishek Shah
<abhishek.shah@...adcom.com> wrote:
> Hi Jon,
>
>> This also will need to be added to
>> drivers/net/ethernet/broadcom/bgmac-bcma.c.  Otherwise, the driver
>> will no longer work for those platforms.  Since this was already
>> accepted, please push out a fix ASAP.
>>
> I do not see how the bcma driver [bgmac-bcma.c] will no longer work.
> The whole idea behind introducing this  BGMAC_FEAT_IDM_MASK bit
> was to keep bcma driver's functionality intact.
>
> The BGMAC_FEAT_IDM_MASK bit is explicitly set by the bgmac-platform driver
> and is unset inside the same if the idm register base is provided.
>
> For BCMA driver case, I do not touch BGMAC_FEAT_IDM_MASK bit, i.e. it
> is *not* set.
> And if it is not set, each idm operation done in bgmac.c will take place.
> Please explain if I am missing something here.

Sorry, I had it flipped in my mind.  Please disregard.

>
>
> Regards,
> Abhishek