ACK: [PATCH 0/4] [SRU][B/OEM-B] Fix multitouch support on some devices

[Sahil Gupta]

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On Tue, Feb 11, 2020, 6:24 AM Sultan Alsawaf <sultan.alsawaf at canonical.com
wrote:

> On Mon, Feb 10, 2020 at 11:46:08AM +0800, Aaron Ma wrote:
> > BugLink: https://bugs.launchpad.net/bugs/1862567
> >
> > SRU justification:
> >
> > [Impact]
> > Some LG touchscreens reported themselves as generic touch devices,
> > actually it is multitouch devices.
> > Even after adding IDs in hid-multitouch, hid-generic will bind the
> > device still.
> > multitouch features are not supported.
> >
> > [Fix]
> > commit e04a0442 make hid-generic work nicely with other drivers like
> > hid-multitouch.
> > If other drivers match the devices, hid-generic will step back.
> > This patch will benefit many devices to support their own drivers
> > without adding IDs.
> >
> > [Test]
> > Verified on LG/ELAN/RAYDIUM touchscreens with positive results.
> >
> > [Regression Potential]
> > Medium.
> > commit e04a0442 is included by 4.16 kernel, only bionic kernel should be
> > applied.
> > This commit is based on the other 3 patches, mostly changes are moving
> > codes to hid-quirk.c.
> > Backports are during to the other backports patches, these changes are
> > moved to
> > hid-quirk.c too.
> >
> > Benjamin Tissoires (4):
> >   HID: core: move the dynamic quirks handling in core
> >   HID: quirks: move the list of special devices into a quirk
> >   HID: core: move the list of ignored devices in hid-quirks.c
> >   HID: core: remove the absolute need of hid_have_special_driver[]
> >
> >  drivers/hid/Makefile            |    2 +-
> >  drivers/hid/hid-core.c          |  951 ++---------------------
> >  drivers/hid/hid-generic.c       |   68 +-
> >  drivers/hid/hid-quirks.c        | 1267 +++++++++++++++++++++++++++++++
> >  drivers/hid/usbhid/Makefile     |    2 +-
> >  drivers/hid/usbhid/hid-core.c   |   10 +-
> >  drivers/hid/usbhid/hid-quirks.c |  405 ----------
> >  include/linux/hid.h             |   21 +-
> >  net/bluetooth/hidp/core.c       |    2 +-
> >  9 files changed, 1414 insertions(+), 1314 deletions(-)
> >  create mode 100644 drivers/hid/hid-quirks.c
> >  delete mode 100644 drivers/hid/usbhid/hid-quirks.c
> >
> > --
> > 2.17.1
> >
> >
> > --
> > kernel-team mailing list
> > kernel-team at lists.ubuntu.com
> > https://lists.ubuntu.com/mailman/listinfo/kernel-team
>
> Acked-by: Sultan Alsawaf <sultan.alsawaf at canonical.com>
>
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