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

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Date:	Fri, 7 Sep 2012 23:13:02 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Tony Lindgren <tony@...mide.com>
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

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?

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.

Yours,
Linus Walleij
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