netdev - Re: [PATCH] [02/10] pasemi_mac: Stop using the pci config space accessors for register read/writes

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Message-Id: <20070823103103.a1815a07.sfr@canb.auug.org.au>
Date:	Thu, 23 Aug 2007 10:31:03 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Olof Johansson <olof@...om.net>
Cc:	jgarzik@...ox.com, netdev@...r.kernel.org, linuxppc-dev@...abs.org
Subject: Re: [PATCH] [02/10] pasemi_mac: Stop using the pci config space
 accessors for register read/writes

Hi Olof,

On Wed, 22 Aug 2007 09:12:48 -0500 Olof Johansson <olof@...om.net> wrote:
>
> -static unsigned int read_iob_reg(struct pasemi_mac *mac, unsigned int reg)
> +static inline unsigned int read_iob_reg(struct pasemi_mac *mac, unsigned int reg)
          ^^^^^^
For static functions in C files, we tend not to bother marking them
inline any more as the compiler does a pretty good job theses days.

>  {
>  	unsigned int val;
>  
> -	pci_read_config_dword(mac->iob_pdev, reg, &val);
> +	val = in_le32(mac->iob_regs+reg);
> +
>  	return val;

Why not just "return in_le32(mac->iob_regs+reg);" ?
And similarly below?

> +static inline void __iomem * __devinit map_onedev(struct pci_dev *p, int index)
          ^^^^^^                ^^^^^^^^^
Mixing inline and __*init is just plain silly :-)

> +fallback:
> +	/* This is hardcoded and ugly, but we have some firmware versions
> +	 * who don't provide the register space in the device tree. Luckily
           ^^^
"that"

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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