[PATCH] gpio/generic: initialize the shadow of direction register

[Shawn Guo]

On Wed, May 16, 2012 at 03:54:37PM +0200, Lothar Waßmann wrote:
> Actually I had sent a similar patch in July last year which was
> rejected with the following reasoning:
> 
> | I don't know if this is a valid thing to do or not. Not every GPIO
> | controller supports reading back the initial state from the direction
> | register. I suspect it is better to leave initialization of the
> | direction to the gpio controller driver itself.
> 
> See: http://lkml.indiana.edu/hypermail/linux/kernel/1107.0/00908.html
> 
> That's why I came up with the patch to gpio-mxc.c
> 
Thanks for the whole story, Lothar.  Hopefully, with the additional
condition checking added, Grant would agree it's the right thing to do.
I will send v2 of the patch to see what we get from people.

-- 
Regards,
Shawn