[PATCH v5 1/3] ARM: Introduce atomic MMIO modify

[Mark Brown]

On Tue, Dec 10, 2013 at 11:41:35AM -0300, Ezequiel Garcia wrote:

> +void atomic_io_modify_relaxed(void __iomem *reg, u32 mask, u32 set)
> +{
> +	unsigned long flags;
> +	u32 value;
> +
> +	raw_spin_lock_irqsave(&__io_lock, flags);
> +	value = readl_relaxed(reg) & ~mask;
> +	value |= (set & mask);
> +	writel_relaxed(value, reg);
> +	raw_spin_unlock_irqrestore(&__io_lock, flags);
> +}
> +EXPORT_SYMBOL(atomic_io_modify_relaxed);

This looks quite generic - why is it in architecture specific code?
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