Subject: Re: [PATCH] net: emac: emac gigabit ethernet controller driver

From: Timur Tabi <[email-masked]>
Date: Tue, 15 Dec 2015 09:17:00 -0600

Arnd Bergmann wrote:
> We generally want to use readl/writel rather than the relaxed versions,
> unless it is in performance-critical code.

What about if we have 20+ writes in a row, for example, when 
initializing a part?  I've seen code like this:

	writel_relaxed(...);
	writel_relaxed(...);
	writel_relaxed(...);
	...
	writel(...); // HW now inited, so enable

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