Re: udev keymaps: support for force_release quirk

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On Tue, Dec 1, 2009 at 02:52, Johannes Stezenbach <js@xxxxxxxxx> wrote:
> On Mon, Nov 30, 2009 at 05:37:04PM -0800, Dmitry Torokhov wrote:
>> On Tue, Dec 01, 2009 at 02:28:06AM +0100, Kay Sievers wrote:
>> > On Tue, Dec 1, 2009 at 00:27, Johannes Stezenbach <js@xxxxxxxxx> wrote:
>> > > +       strncat(fn, "/device/device/force_release", sizeof(fn));
>> >
>> > You can only select a parent device by it's subsystem/devtype. Any
>> > hardcoded assumption about the order of parents is wrong, and the
>> > "device" link is deprecated, it must not appear anywhere in udev code.
>
> I have to admit I have no clue how else to do it.  I'd be glad
> to hear your advice.

For udev it would be something like:
  udev_device_get_parent_with_subsystem_devtype(..., "serio", NULL);

To find the first parent device which is a device on the "serio" bus.

Kay
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