linux-kernel - Re: [PATCH v2 09/35] brcmfmac: pcie: Perform firmware selection for Apple platforms

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Message-ID: <f4dfbb6b-b635-e9b3-5e5b-8527cf1e4f60@marcan.st>
Date:   Thu, 6 Jan 2022 22:12:56 +0900
From:   Hector Martin <marcan@...can.st>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Arend van Spriel <aspriel@...il.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Chi-hsien Lin <chi-hsien.lin@...ineon.com>,
        Wright Feng <wright.feng@...ineon.com>,
        Dmitry Osipenko <digetx@...il.com>,
        Sven Peter <sven@...npeter.dev>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Mark Kettenis <kettenis@...nbsd.org>,
        Rafał Miłecki <zajec5@...il.com>,
        Pieter-Paul Giesberts <pieter-paul.giesberts@...adcom.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Hans de Goede <hdegoede@...hat.com>,
        "John W. Linville" <linville@...driver.com>,
        "brian m. carlson" <sandals@...stytoothpaste.net>,
        "open list:TI WILINK WIRELES..." <linux-wireless@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        "open list:BROADCOM BRCM80211 IEEE802.11n WIRELESS DRIVER" 
        <brcm80211-dev-list.pdl@...adcom.com>,
        SHA-cyfmac-dev-list@...ineon.com
Subject: Re: [PATCH v2 09/35] brcmfmac: pcie: Perform firmware selection for
 Apple platforms

On 04/01/2022 23.24, Andy Shevchenko wrote:
> On Tue, Jan 4, 2022 at 9:28 AM Hector Martin <marcan@...can.st> wrote:

>> +               /* Example: apple,shikoku-RASP-m-6.11-X3 */
>> +               len = (strlen(devinfo->settings->board_type) + 1 +
>> +                      strlen(devinfo->otp.module) + 1 +
>> +                      strlen(devinfo->otp.vendor) + 1 +
>> +                      strlen(devinfo->otp.version) + 1 +
>> +                      strlen(devinfo->settings->antenna_sku) + 1);
> 
> NIH devm_kasprrintf() ?

This one builds it incrementally, but you're right, kasprintf is
probably more readable here and fewer lines even though it'll duplicate
all the previous argument references for each pattern. I'll redo it with
devm_kasprintf().

> 
>> +               /* apple,shikoku */
>> +               fwreq->board_types[5] = devinfo->settings->board_type;
>> +
>> +               buf = devm_kzalloc(&devinfo->pdev->dev, len, GFP_KERNEL);
>> +
>> +               strscpy(buf, devinfo->settings->board_type, len);
>> +               strlcat(buf, "-", len);
>> +               strlcat(buf, devinfo->settings->antenna_sku, len);
>> +               /* apple,shikoku-X3 */
>> +               fwreq->board_types[4] = devm_kstrdup(&devinfo->pdev->dev, buf,
>> +                                                    GFP_KERNEL);
>> +
>> +               strscpy(buf, devinfo->settings->board_type, len);
>> +               strlcat(buf, "-", len);
>> +               strlcat(buf, devinfo->otp.module, len);
>> +               /* apple,shikoku-RASP */
>> +               fwreq->board_types[3] = devm_kstrdup(&devinfo->pdev->dev, buf,
>> +                                                    GFP_KERNEL);
>> +
>> +               strlcat(buf, "-", len);
>> +               strlcat(buf, devinfo->otp.vendor, len);
>> +               /* apple,shikoku-RASP-m */
>> +               fwreq->board_types[2] = devm_kstrdup(&devinfo->pdev->dev, buf,
>> +                                                    GFP_KERNEL);
>> +
>> +               strlcat(buf, "-", len);
>> +               strlcat(buf, devinfo->otp.version, len);
>> +               /* apple,shikoku-RASP-m-6.11 */
>> +               fwreq->board_types[1] = devm_kstrdup(&devinfo->pdev->dev, buf,
>> +                                                    GFP_KERNEL);
>> +
>> +               strlcat(buf, "-", len);
>> +               strlcat(buf, devinfo->settings->antenna_sku, len);
>> +               /* apple,shikoku-RASP-m-6.11-X3 */
>> +               fwreq->board_types[0] = buf;
> 


-- 
Hector Martin (marcan@...can.st)
Public Key: https://mrcn.st/pub