Re: [RFC PATCH v3 2/2] drivers: mfd: vexpress: add Serial PowerController (SPC) support

[Nicolas Pitre]

On Thu, 13 Jun 2013, Olof Johansson wrote:

> > +	u32 status = readl_relaxed(info->baseaddr + PWC_STATUS);
> 
> Why readl_relaxed() here? Can't you use a normal readl()?

Unfortunately, on ARM readl_relaxed() _is_ the normal readl() because 
the actual readl() may have side effects.  See commit 79f64dbf68c8.


Nicolas
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