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

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Date:   Sat, 11 Feb 2023 12:49:50 +0000
From:   Aditya Garg <gargaditya08@...e.com>
To:     Hector Martin <marcan@...can.st>
CC:     Arend Van Spriel <arend.vanspriel@...adcom.com>,
        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>,
        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>,
        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>
Subject: Re: [PATCH v3 1/4] wifi: brcmfmac: Rename Cypress 89459 to BCM4355



> On 11-Feb-2023, at 6:16 PM, Hector Martin <marcan@...can.st> wrote:
> 
> On 11/02/2023 20.23, Arend Van Spriel wrote:
>>> On February 11, 2023 11:09:02 AM Hector Martin <marcan@...can.st> wrote:
>>> 
>>> 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.
>> 
>> The commit message is documenting what we end up with post reviewing so 
>> patch versions are meaningless there. Of course useful information that 
>> came up in review cycles should end up in the commit message.
>> 
> 
> Do you really want me to respin this again just to remove 8 characters
> from the commit message? I know it doesn't have much meaning post review
> but it's not unheard of either, grep git logs and you'll find plenty of
> examples.
> 
> - Hector

Adding to that, I guess the maintainers can do a bit on their part. Imao it’s
really frustrating preparing the same patch again and again, especially for
bits like these.