linux-kernel - Re: [PATCH 3/4] net: dsa: vsc73xx: add support for parallel mode

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Date:   Mon, 1 Jul 2019 18:11:34 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Pawel Dembicki <paweldembicki@...il.com>
Cc:     linus.walleij@...aro.org,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] net: dsa: vsc73xx: add support for parallel mode

On Mon, Jul 01, 2019 at 05:27:22PM +0200, Pawel Dembicki wrote:
> +static int vsc73xx_platform_read(struct vsc73xx *vsc, u8 block, u8 subblock,
> +				 u8 reg, u32 *val)
> +{
> +	struct vsc73xx_platform *vsc_platform = vsc->priv;
> +	u32 offset;
> +
> +	if (!vsc73xx_is_addr_valid(block, subblock))
> +		return -EINVAL;
> +
> +	offset = vsc73xx_make_addr(block, subblock, reg);
> +
> +	mutex_lock(&vsc->lock);
> +		*val = ioread32be(vsc_platform->base_addr + offset);
> +	mutex_unlock(&vsc->lock);

Hi Pawel

What is this mutex protecting?

Plus the indentation is wrong.

Thanks
	Andrew