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    Subject[PATCH v2 0/6] hid: Introduce device groups
    Hi all,

    Here is the second version of the extension to the device-driver
    matching mechanism. The previous version did not work well with
    out-of-tree drivers. The default group handling was backwards, so I
    had better list the right behavior here for easier review. For
    starters, drivers belong to one of these groups:

    HID_GROUP_ANY - The default for all drivers. Matches any device.
    HID_GROUP_GENERIC - The generic drivers. Matches generic devices only.
    HID_GROUP_MULTITOUCH - The MT driver. Matches MT devices only.

    A HID device is placed in one of the above groups during device
    add. The logic is determined by the hid core. It does not matter to
    userland which group a device belongs to, because all out-of-tree
    drivers and all dynamic device ids belong to the default group, which
    matches any device. The device groups only steer udev to the right
    module, without loss of generality. In fact, switching drivers in
    userland is simplified.

    A known outstanding issue is the rebinding of a hid device to a driver
    that affects the report parsing. I am currently testing a patchset for
    it, which should go in before this one. However, since it is largely
    orthogonal, and it seems the present patchset does the right thing
    with regards to everything else, I thought I'd give it another spin

    The patches apply to 3.4-rc3; final version will apply for next.


    Henrik Rydberg (6):
    hid: Add device group to modalias
    hid: Parse the device before adding it
    hid: Create a generic device group
    hid: Allow bus wildcard matching
    hid-multitouch: Switch to device groups
    hid-multitouch: Remove remnant quirk handling

    drivers/hid/hid-core.c | 130 ++++++++++++++-------------------------
    drivers/hid/hid-input.c | 11 ----
    drivers/hid/hid-multitouch.c | 3 +-
    drivers/hid/usbhid/hid-core.c | 2 +-
    include/linux/hid.h | 20 +++---
    include/linux/mod_devicetable.h | 4 +-
    net/bluetooth/hidp/core.c | 2 +-
    scripts/mod/file2alias.c | 5 +-
    8 files changed, 71 insertions(+), 106 deletions(-)


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