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    SubjectRe: [PATCH] hid: Do not create input devices for feature reports
    On Wed, Mar 02, 2011 at 04:02:27PM +0100, Henrik Rydberg wrote:
    > Hi Dmitry,
    >
    > > > For output devices, the only supported case is EV_LED, which passes
    > > > events to the input device. It is probably assumed that
    > > > HID_QUIRK_MULTI_INPUT is false for those devices. Jiri?
    > > >
    > >
    > > I am probably late to the party fut the above is not true. Here is an
    > > example of an USB keyboard (wih LEDs) that is split into two:
    > >
    > > I: Bus=0003 Vendor=046d Product=c30e Version=0110
    > > N: Name="Logitech HID compliant keyboard"
    > > P: Phys=usb-0000:00:1d.0-1.2/input0
    > > S:
    > > Sysfs=/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/input/input3
    > > U: Uniq=
    > > H: Handlers=sysrq kbd event3
    > > B: PROP=0
    > > B: EV=120013
    > > B: KEY=1000000000007 ff800000000007ff febeffdff3cfffff fffffffffffffffe
    > > B: MSC=10
    > > B: LED=7
    > >
    > > I: Bus=0003 Vendor=046d Product=c30e Version=0110
    > > N: Name="Logitech HID compliant keyboard"
    > > P: Phys=usb-0000:00:1d.0-1.2/input1
    > > S:
    > > Sysfs=/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.1/input/input4
    > > U: Uniq=
    > > H: Handlers=kbd event4
    > > B: PROP=0
    > > B: EV=13
    > > B: KEY=fff ffffffffffffffff 2000000 387ad800d001 1e000000000000 0
    > > B: MSC=10
    > >
    > > This was done, most likely, because Logitech decided to reuse usage codes
    > > for different keys.
    >
    > This looks like different interfaces though, which should be fine. It
    > is only in the odd case of mixed input and output reports on the same
    > interface that the MULTI_INPUT quirk would ever have any strange
    > effect.
    >

    Gah, when I looked at it before posting I could swore they were on the
    same interface. OK, just ignore me...

    Thanks.

    --
    Dmitry


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