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Date: Tue, 22 Aug 2017 08:51:15 -0700
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Chen-Yu Tsai <wens@csie.org>
Cc: Ben Hutchings <ben@decadent.org.uk>,
        linux-kernel <linux-kernel@vger.kernel.org>, stable@vger.kernel.org,
        Icenowy Zheng <icenowy@aosc.io>,
        Linus Walleij <linus.walleij@linaro.org>
Subject: Re: [PATCH 4.12 55/65] pinctrl: sunxi: add a missing function of
 A10/A20 pinctrl driver
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On Tue, Aug 22, 2017 at 05:11:30PM +0800, Chen-Yu Tsai wrote:
> On Sat, Aug 19, 2017 at 4:07 AM, Ben Hutchings <ben@decadent.org.uk> wrote:
> > On Mon, 2017-08-14 at 18:19 -0700, Greg Kroah-Hartman wrote:
> >> 4.12-stable review patch.  If anyone has any objections, please let me know.
> >>
> >> ------------------
> >>
> >> From: Icenowy Zheng <icenowy@aosc.io>
> >>
> >> commit d81ece747d8727bb8b1cfc9a20dbe62f09a4e35a upstream.
> >>
> >> The PH16 pin has a function with mux id 0x5, which is the DET pin of the
> >> "sim" (smart card reader) IP block.
> >>
> >> This function is missing in old versions of A10/A20 SoCs' datasheets and
> >> user manuals, so it's also missing in the old drivers. The newest A10
> >> Datasheet V1.70 and A20 Datasheet V1.41 contain this pin function, and
> >> it's discovered during implementing R40 pinctrl driver.
> >>
> >> Add it to the driver. As we now merged A20 pinctrl driver to the A10
> >> one, we need to only fix the A10 driver now.
> >
> > That happened after 4.12, so I think for stable the same change should
> > be applied in drivers/pinctrl/sunxi/pinctrl-sun7i-a20.c.
> 
> Indeed. Should we send a backported patch?

Yes, please do.

thanks,

greg k-h