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From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Mon, 31 Jan 2022 18:28:25 +0200
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Subject: Re: [PATCH v4 3/9] brcmfmac: firmware: Do not crash on a NULL board_type
To:     Hector Martin <marcan@marcan.st>
Cc:     Kalle Valo <kvalo@codeaurora.org>,
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On Mon, Jan 31, 2022 at 6:07 PM Hector Martin <marcan@marcan.st> wrote:
>
> This unbreaks support for USB devices, which do not have a board_type
> to create an alt_path out of and thus were running into a NULL
> dereference.

...

> @@ -599,6 +599,9 @@ static char *brcm_alt_fw_path(const char *path, const char *board_type)
>         char alt_path[BRCMF_FW_NAME_LEN];
>         char suffix[5];
>
> +       if (!board_type)
> +               return NULL;

I still think it's better to have both callers do the same thing.

Now it will be the double check in one case,

-- 
With Best Regards,
Andy Shevchenko