linux-kernel - Re: [PATCH] firmware: add a function to load optional firmware v2

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Date:   Tue, 13 Mar 2018 15:16:34 +0200
From:   Kalle Valo <kvalo@...eaurora.org>
To:     "Luis R. Rodriguez" <mcgrof@...nel.org>
Cc:     Andres Rodriguez <andresx7@...il.com>,
        "linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        Arend Van Spriel <arend.vanspriel@...adcom.com>
Subject: Re: [PATCH] firmware: add a function to load optional firmware v2

"Luis R. Rodriguez" <mcgrof@...nel.org> writes:

>> +/**
>> + * request_firmware_optional: - request for an optional fw module
>> + * @firmware_p: pointer to firmware image
>> + * @name: name of firmware file
>> + * @device: device for which firmware is being loaded
>> + *
>> + * This function is similar in behaviour to request_firmware(), except
>> + * it doesn't produce warning messages when the file is not found.
>> + **/
>> +int
>> +request_firmware_optional(const struct firmware **firmware_p, const char *name,
>> +                         struct device *device)
>> +{
>> +       int ret;
>> +
>> +       /* Need to pin this module until return */
>> +       __module_get(THIS_MODULE);
>> +               ret = _request_firmware(firmware_p, name, device, NULL, 0,
>> +                               FW_OPT_UEVENT | FW_OPT_NO_WARN );
>> +       module_put(THIS_MODULE);
>> +       return ret;
>> +}
>> +EXPORT_SYMBOL(request_firmware_optional);
>
> New exported symbols for the firmware API should be EXPORT_SYMBOL_GPL().

To me the word optional feels weird to me. For example, in ath10k I
suspect we would be only calling request_firmware_optional() with all
firmware and not request_firmware() at all.

How about request_firmware_nowarn()? That would even match the
documentation above.

-- 
Kalle Valo