netdev - Re: [PATCH v3 1/4] wifi: brcmfmac: Rename Cypress 89459 to BCM4355

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Message-ID: <624c0a20-f4e6-14a5-02a2-eaf7b36e9331@marcan.st>
Date:   Sat, 11 Feb 2023 19:08:50 +0900
From:   Hector Martin <marcan@...can.st>
To:     Ping-Ke Shih <pkshih@...ltek.com>,
        Arend van Spriel <aspriel@...il.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Kalle Valo <kvalo@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     Alexander Prutskov <alep@...ress.com>,
        Chi-Hsien Lin <chi-hsien.lin@...ress.com>,
        Wright Feng <wright.feng@...ress.com>,
        Ian Lin <ian.lin@...ineon.com>,
        Soontak Lee <soontak.lee@...ress.com>,
        Joseph chuang <jiac@...ress.com>,
        Sven Peter <sven@...npeter.dev>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Aditya Garg <gargaditya08@...e.com>,
        Jonas Gorski <jonas.gorski@...il.com>,
        "asahi@...ts.linux.dev" <asahi@...ts.linux.dev>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "brcm80211-dev-list.pdl@...adcom.com" 
        <brcm80211-dev-list.pdl@...adcom.com>,
        "SHA-cyfmac-dev-list@...ineon.com" <SHA-cyfmac-dev-list@...ineon.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Arend van Spriel <arend.vanspriel@...adcom.com>
Subject: Re: [PATCH v3 1/4] wifi: brcmfmac: Rename Cypress 89459 to BCM4355

On 10/02/2023 12.42, Ping-Ke Shih wrote:
> 
> 
>> -----Original Message-----
>> From: Hector Martin <marcan@...can.st>
>> Sent: Friday, February 10, 2023 10:50 AM
>> To: Arend van Spriel <aspriel@...il.com>; Franky Lin <franky.lin@...adcom.com>; Hante Meuleman
>> <hante.meuleman@...adcom.com>; Kalle Valo <kvalo@...nel.org>; David S. Miller <davem@...emloft.net>; Eric
>> Dumazet <edumazet@...gle.com>; Jakub Kicinski <kuba@...nel.org>; Paolo Abeni <pabeni@...hat.com>
>> Cc: Alexander Prutskov <alep@...ress.com>; Chi-Hsien Lin <chi-hsien.lin@...ress.com>; Wright Feng
>> <wright.feng@...ress.com>; Ian Lin <ian.lin@...ineon.com>; Soontak Lee <soontak.lee@...ress.com>; Joseph
>> chuang <jiac@...ress.com>; Sven Peter <sven@...npeter.dev>; Alyssa Rosenzweig <alyssa@...enzweig.io>;
>> Aditya Garg <gargaditya08@...e.com>; Jonas Gorski <jonas.gorski@...il.com>; asahi@...ts.linux.dev;
>> linux-wireless@...r.kernel.org; brcm80211-dev-list.pdl@...adcom.com; SHA-cyfmac-dev-list@...ineon.com;
>> netdev@...r.kernel.org; linux-kernel@...r.kernel.org; Hector Martin <marcan@...can.st>; Arend van Spriel
>> <arend.vanspriel@...adcom.com>
>> Subject: [PATCH v3 1/4] wifi: brcmfmac: Rename Cypress 89459 to BCM4355
>>
>> The commit that introduced support for this chip incorrectly claimed it
>> is a Cypress-specific part, while in actuality it is just a variant of
>> BCM4355 silicon (as evidenced by the chip ID).
>>
>> The relationship between Cypress products and Broadcom products isn't
>> entirely clear but given what little information is available and prior
>> art in the driver, it seems the convention should be that originally
>> Broadcom parts should retain the Broadcom name.
>>
>> Thus, rename the relevant constants and firmware file. Also rename the
>> specific 89459 PCIe ID to BCM43596, which seems to be the original
>> subvariant name for this PCI ID (as defined in the out-of-tree bcmdhd
>> driver).
>>
>> v2: Since Cypress added this part and will presumably be providing
>> its supported firmware, we keep the CYW designation for this device.
>>
>> v3: Drop the RAW device ID in this commit. We don't do this for the
>> other chips since apparently some devices with them exist in the wild,
>> but there is already a 4355 entry with the Broadcom subvendor and WCC
>> firmware vendor, so adding a generic fallback to Cypress seems
>> redundant (no reason why a device would have the raw device ID *and* an
>> explicitly programmed subvendor).
> 
> Do you really want to add changes of v2 and v3 to commit message? Or,
> just want to let reviewers know that? If latter one is what you want,
> move them after s-o-b with delimiter ---

Both; I thought those things were worth mentioning in the commit message
as it stands on its own, and left the version tags in so reviewers know
when they were introduced.

- Hector