[PATCH v2 1/5] pinctrl: imx: detect uninitialized pins

[Shawn Guo]

On Tue, Sep 23, 2014 at 07:37:53PM +0200, Stefan Agner wrote:
> The pinctrl driver initialized the register offsets for the pins
> with 0. On Vybrid an offset of 0 is a valid offset for the pinctrl
> mux register. So far, this was solved using the ZERO_OFFSET_VALID
> flag which allowed offsets of 0. However, this does not allow to
> verify whether a pins struct imx_pmx_func was initialized or not.
> 
> Use signed offset values for register offsets and initialize those
> with -1 in order to detect uninitialized offset values reliable.
> 
> Signed-off-by: Stefan Agner <stefan at agner.ch>

Acked-by: Shawn Guo <shawn.guo at freescale.com>