netdev - Re: [PATCH] net: phy: marvell10g: add firmware load support

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Message-ID: <87tv23ausd.fsf@tarshish>
Date:   Wed, 01 Apr 2020 22:08:18 +0300
From:   Baruch Siach <baruch@...s.co.il>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Russell King <linux@...linux.org.uk>, netdev@...r.kernel.org,
        Shmuel Hazan <sh@...s.co.il>, Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>
Subject: Re: [PATCH] net: phy: marvell10g: add firmware load support

Hi Florian,

On Tue, Mar 31 2020, Florian Fainelli wrote:
> On 3/31/2020 10:47 AM, Baruch Siach wrote:

[snip]

>> +	ret = request_firmware(&fw_entry, fw_file, &phydev->mdio.dev);
>> +	if (ret < 0)
>> +		return ret;
>> +
>> +	/* Firmware size must be larger than header, and even */
>> +	if (fw_entry->size <= MV_FIRMWARE_HEADER_SIZE ||
>> +			(fw_entry->size % 2) != 0) {
>> +		dev_err(&phydev->mdio.dev, "firmware file invalid");
>> +		return -EINVAL;
>> +	}
>
> You need to release the firmware file here.

Will fix.

> There is also possibly another case that you are not covering here,
> which is that the firmware on disk is newer than the firmware
> *already* loaded in the PHY, this should presumably update the running
> firmware to the latest copy.

Firmware is only loaded when the PHY boot state is MV_PMA_BOOT_WAITING
(see below). The code does not attempt to update existing PHY firmware.

> Without being able to publish the firmware in linux-firmware though, all
> of this may be moot.

I can't do much about that, unfortunately.

baruch

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