netdev - Re: [PATCH net-next v2 06/10] net: bcmgenet: add main driver file

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Date:	Thu, 13 Feb 2014 02:58:43 -0800
From:	Joe Perches <joe@...ches.com>
To:	Francois Romieu <romieu@...zoreil.com>
Cc:	Florian Fainelli <f.fainelli@...il.com>, netdev@...r.kernel.org,
	davem@...emloft.net, cernekee@...il.com, devicetree@...r.kernel.org
Subject: Re: [PATCH net-next v2 06/10] net: bcmgenet: add main driver file

On Thu, 2014-02-13 at 11:35 +0100, Francois Romieu wrote:
> Florian Fainelli <f.fainelli@...il.com> :
> [...]
> > diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
[]
> > +static int bcmgenet_set_rx_csum(struct net_device *dev,
> > +				netdev_features_t wanted)
> > +{
> > +	struct bcmgenet_priv *priv = netdev_priv(dev);
> > +	u32 rbuf_chk_ctrl;
> > +	int rx_csum_en;
> > +
> > +	rx_csum_en = !!(wanted & NETIF_F_RXCSUM);
> 
> It's a bool.

It could be a bool.

The struct definition has:

+	unsigned int desc_rxchk_en;

but perhaps a lot of these members could be bool.

It'd be nicer if the variable types were the same.

> > +	spin_lock_bh(&priv->bh_lock);
> > +	rbuf_chk_ctrl = bcmgenet_rbuf_readl(priv, RBUF_CHK_CTRL);
> > +
> > +	/* enable rx checksumming */
> > +	if (!rx_csum_en)
> > +		rbuf_chk_ctrl &= ~RBUF_RXCHK_EN;
> > +	else
> > +		rbuf_chk_ctrl |= RBUF_RXCHK_EN;

This is more normally written with a positive test like:

	if (rx_csum_en)
		rbuf_chk_ctrl |= RBUF_RXCHK_EN;
	else
		rbuf_chk_ctrl &= RBUF_RXCHK_EN;

> > +	priv->desc_rxchk_en = rx_csum_en;



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