From: Lennert Buytenhek <buytenh@marvell.com>
Date: Thu, 20 Nov 2008 11:57:36 +0000 (-0800)
Subject: mv643xx_eth: introduce per-port register area pointer
X-Git-Tag: v2.6.29-rc1~581^2~632
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=37a6084f4b4693a408ac2fb229843af9f9f301ce;p=pandora-kernel.git

mv643xx_eth: introduce per-port register area pointer

The mv643xx_eth driver uses the rdl()/wrl() macros to read and
write hardware registers.  Per-port registers are accessed in the
following way:

	#define PORT_STATUS(p)			(0x0444 + ((p) << 10))

	[...]

	static inline u32 rdl(struct mv643xx_eth_private *mp, int offset)
	{
		return readl(mp->shared->base + offset);
	}

	[...]

	port_status = rdl(mp, PORT_STATUS(mp->port_num));

By giving the per-port 'struct mv643xx_eth_private' its own
'void __iomem *base' pointer that points to the per-port register
area, we can get rid of both the double indirection and the << 10
that is done for every per-port register access -- this patch does
that.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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