linux-kernel - Re: [PATCH net-next v5 17/17] net: pse-pd: Add TI TPS23881 PSE controller driver

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Date: Wed, 28 Feb 2024 12:53:44 +0000
From: Simon Horman <horms@...nel.org>
To: Kory Maincent <kory.maincent@...tlin.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Jonathan Corbet <corbet@....net>,
	Luis Chamberlain <mcgrof@...nel.org>,
	Russ Weight <russ.weight@...ux.dev>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Oleksij Rempel <o.rempel@...gutronix.de>,
	Mark Brown <broonie@...nel.org>,
	Frank Rowand <frowand.list@...il.com>, Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, devicetree@...r.kernel.org,
	Dent Project <dentproject@...uxfoundation.org>
Subject: Re: [PATCH net-next v5 17/17] net: pse-pd: Add TI TPS23881 PSE
 controller driver

On Tue, Feb 27, 2024 at 03:42:59PM +0100, Kory Maincent wrote:
> Add a new driver for the TI TPS23881 I2C Power Sourcing Equipment
> controller.
> 
> This patch is sponsored by Dent Project <dentproject@...uxfoundation.org>.
> 
> Signed-off-by: Kory Maincent <kory.maincent@...tlin.com>

..

> +static int tps23881_flash_fw_part(struct i2c_client *client,
> +				  const char *fw_name,
> +				  const struct tps23881_fw_conf *fw_conf)
> +{
> +	const struct firmware *fw = NULL;
> +	int i, ret;
> +
> +	ret = request_firmware(&fw, fw_name, &client->dev);
> +	if (ret)
> +		return ret;
> +
> +	dev_info(&client->dev, "Flashing %s\n", fw_name);
> +
> +	/* Prepare device for RAM download */
> +	while (fw_conf->reg) {
> +		ret = i2c_smbus_write_byte_data(client, fw_conf->reg,
> +						fw_conf->val);
> +		if (ret < 0)

Hi Kory,

Should fw be released here.

> +			return ret;
> +
> +		fw_conf++;
> +	}
> +
> +	/* Flash the firmware file */
> +	for (i = 0; i < fw->size; i++) {
> +		ret = i2c_smbus_write_byte_data(client,
> +						TPS23881_REG_SRAM_DATA,
> +						fw->data[i]);
> +		if (ret < 0)

And here?

Flagged by Smatch.

> +			return ret;
> +	}
> +
> +	release_firmware(fw);
> +
> +	return 0;
> +}

..