Re: [PATCH] GPIO: gpio-pxa: fix bug when get gpio value

[Linus Walleij]

On Tue, Sep 25, 2012 at 2:03 PM, Neil Zhang <zhangwm@xxxxxxxxxxx> wrote:

> We need to return 0 or 1 when get gpio value.

OK...

>  static int pxa_gpio_get(struct gpio_chip *chip, unsigned offset)
>  {
> -       return readl_relaxed(gpio_chip_base(chip) + GPLR_OFFSET) & (1 << offset);
> +       u32 gplr = __raw_readl(gpio_chip_base(chip) + GPLR_OFFSET);
> +       u32 mask = 1 << offset;
> +
> +       return (gplr & mask) != 0;

So why are you switching the perfectly working readl_relaxed() call to
a __raw_readl()?

Please don't do this, and respin the patch.

Yours,
Linus Walleij
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