Current implementation of cp2112_raw_event() only accepts one data report at a
time. If last received data report is not fully handled yet, a new incoming
data report will overwrite it. In such case we don't guaranteed to propagate
the correct incoming data.

The trivial fix implemented here forces a single report at a time by requesting
in cp2112_read() no more than 61 byte of data, which is the payload size of a
single data report.

Cc: stable@vger.kernel.org
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: Ellen Wang <ellen@cumulusnetworks.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

Commit 862cf55 ("HID: wacom: Introduce a new WACOM_DEVICETYPE_PAD device_type")
neglected to set the WACOM_DEVICETYPE_PAD flag for older two-finger Bamboo
Touch tablets. Not only does this result in the pad device not appearing when
such a tablet is plugged in, but also causes a segfault when 'wacom_bpt_touch'
tries to send pad events. This patch adds the flag to resolve these issues.

Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

Fields like HID_DG_CONTACTCOUNT are outside of the physical collection,
but within the application collection and report ID.  Make sure to catch
those fields that are not part of the mt_report_id and return 0 so they
can be processed with the pen.  Otherwise, the wrong HID_DG_CONTACTCOUNT
will be applied to cc_index and result in dereferencing a null pointer in
mt_touch_report.

Signed-off-by: Brent Adam <brentadam@smarttech.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

The newer firmware on MS Surface 2 tablets causes the type and touch cover keyboards to timeout when waiting for reports.
The quirk HID_QUIRK_NO_INIT_REPORTS allows them to function normally.

Signed-off-by: Reyad Attiyat <reyad.attiyat@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

We can't pass a NULL to input_unregister_device().

Fixes: 2a6cdbdd4cc0 ('HID: wacom: Introduce new 'touch_input' device')

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

Conflicts:
	drivers/hid/wacom_wac.c

Conflicts:
	drivers/hid/hid-logitech-hidpp.c

Use kernel.h macro definition.

Thanks to Julia Lawall for Coccinelle scripting support.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

Adding support for the Microsoft Surface Pro Power Cover.

Signed-off-by: Raimund Roth <raimundmroth@gmail.gom>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

Patch report descriptor to remove unused and ramdomly changing axis.

Original report descriptor (via BT) was as follows:
00000000  05 01 09 04 a1 01 a1 02  85 01 75 08 95 01 15 00  |..........u.....|
00000010  26 ff 00 81 03 75 01 95  13 15 00 25 01 35 00 45  |&....u.....%.5.E|
00000020  01 05 09 19 01 29 13 81  02 75 01 95 0d 06 00 ff  |.....)...u......|
00000030  81 03 15 00 26 ff 00 05  01 09 01 a1 00 75 08 95  |....&........u..|
00000040  04 35 00 46 ff 00 09 30  09 31 09 32 09 35 81 02  |.5.F...0.1.2.5..|
00000050  c0 05 01 75 08 95 27 09  01 81 02 75 08 95 30 09  |...u..'....u..0.|
00000060  01 91 02 75 08 95 30 09  01 b1 02 c0 a1 02 85 02  |...u..0.........|
00000070  75 08 95 30 09 01 b1 02  c0 a1 02 85 ee 75 08 95  |u..0.........u..|
00000080  30 09 01 b1 02 c0 a1 02  85 ef 75 08 95 30 09 01  |0.........u..0..|
00000090  b1 02 c0 c0 00                                    |.....|
00000095

Signed-off-by: Simon Wood <simon@mungewell.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>