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    SubjectRe: [PATCH v3 4/5] clk: basic gateable and fixed-rate clks
    On Tuesday 22 November 2011, Mike Turquette wrote:
    > +static void clk_hw_gate_set_bit(struct clk *clk)
    > +{
    > + struct clk_hw_gate *gate = to_clk_hw_gate(clk);
    > + u32 reg;
    > +
    > + reg = __raw_readl(gate->reg);
    > + reg |= BIT(gate->bit_idx);
    > + __raw_writel(reg, gate->reg);
    > +}

    You cannot rely on __raw_readl() to do the right thing, especially
    in architecture independent code. The safe (but slightly inefficient)
    solution would be readl/writel. For ARM-only code, it would be best
    to use readl_relaxed()/writel_relaxed(), but most architectures do
    not implement that. We can probably add a set of helpers in asm-generic/
    to define them to the default functions, like "#define readl_relaxed(x)
    readl(x)", which I think is a good idea anyway.


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