linux-kernel - Re: [PATCH 1/2] pinctrl: pinctrl-single: Make sure we do not change bits outside of mask

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Message-ID: <20120907213922.GN1303@atomide.com>
Date:	Fri, 7 Sep 2012 14:39:22 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Peter Ujfalusi <peter.ujfalusi@...com>,
	linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org
Subject: Re: [PATCH 1/2] pinctrl: pinctrl-single: Make sure we do not
 change bits outside of mask

* Linus Walleij <linus.walleij@...aro.org> [120907 14:13]:
> On Thu, Sep 6, 2012 at 8:59 PM, Tony Lindgren <tony@...mide.com> wrote:
> > * Peter Ujfalusi <peter.ujfalusi@...com> [120905 02:02]:
> >> Use the pcs->fmask to make sure that the value is not changing (setting)
> >> bits in areas where it should not.
> >> To avoid situations like this:
> >>
> >> pmx_dummy: pinmux@...00040 {
> >>       compatible = "pinctrl-single";
> >>       reg = <0x4a100040 0x0196>;
> >>       #address-cells = <1>;
> >>       #size-cells = <0>;
> >>       pinctrl-single,register-width = <16>;
> >>       pinctrl-single,function-mask = <0x00ff>;
> >> };
> >>
> >> &pmx_dummy {
> >>       pinctrl-names = "default";
> >>       pinctrl-0 = <&board_pins>;
> >>
> >>       board_pins: pinmux_board_pins {
> >>               pinctrl-single,pins = <
> >>                       0x6c 0xf0f
> >>                       0x6e 0x10f
> >>                       0x70 0x23f
> >>                       0x72 0xa5f
> >>               >;
> >>       };
> >> };
> >>
> >> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
> >
> > Thanks this is a valid fix:
> >
> > Acked-by: Tony Lindgren <tony@...mide.com>
> 
> Since nothing in v3.6 is using pinctrl-simple yet, it's not a regression
> right?

Right.
 
> So can you just group this with the other pinctrl things you are
> harvesting in the OMAP tree? I was going to push it for
> the v3.7 cycle otherwise.

You can take this for v3.7, the changes I have are just adding .dts
entries to use the driver. The driver related changes are being
merged by the related driver lists.

Regards,

Tony
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