On Thu, Jul 12, 2012 at 05:48:46PM +0800, Hui Wang wrote:
...
> > +
> > +int imx_pinctrl_gpr_read(u8 gpr)
> > +{
> > + if (!imx_pinctrl)
> > + return -EPROBE_DEFER;
> > +
> > + return readl(imx_pinctrl->base + gpr);
> >
> Suppose the MSB of the register content is 1, how does the caller
> distinguish if the function return an error or return a register content?
>
Good catch, it's indeed an issue.
We need find a way to fix it, probably i would add a parameter for
read API to return a u32 value.
Thanks
Regards
Dong Aisheng
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