Re: [PATCH V2 2/2] pinctrl: tegra-xusb: Fix allocation of pins

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Wed, May 27, 2015 at 3:11 PM, Jon Hunter <jonathanh@xxxxxxxxxx> wrote:

> Commit e5b3b2d9ed20 ("pinctrl: allows not to define the get_group_pins
> operation") allows pin controllers not to register the get_group_pins()
> function. However, a side-effect of not registering this function is
> that pins are not allocated and potentially multiple devices could
> attempt to configure the same pins [1]. Although this problem exists in
> the pinctrl core, because only a few devices are impacted by this, fix
> this for tegra-xusb by adding the get_group_pins() function.
>
> Please note that in addition to adding the get_group_pins() functions
> the pins/lanes for the tegra-xusb also need to be registered when
> calling pinctrl_register(). This also allows the current pinmux state
> to be viewed by the debugfs node "pinmux-pins" for the tegra-xusb pad
> controller.
>
> [1] http://www.spinics.net/lists/linux-gpio/msg05810.html
>
> Signed-off-by: Jon Hunter <jonathanh@xxxxxxxxxx>
> Acked-by: Thierry Reding <treding@xxxxxxxxxx>

Patch applied.

Yours,
Linus Walleij
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