diff options
| author |   Fernando D S Lima <fernandodsl@gmail.com> | 2015-09-03 12:56:31 -0300 |
|---|---|---|
| committer |   Jiri Kosina <jkosina@suse.cz> | 2015-09-04 14:47:01 +0200 |
| commit | 9fe8eccad4425fd024516fac2ebc0a39610441a0 (patch) | |
| tree | 4d2707100449948a406dc4cf36d0165ce454f13e /drivers/hid/hid-core.c | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid (diff) | |
| download | linux-dev-9fe8eccad4425fd024516fac2ebc0a39610441a0.tar.xz linux-dev-9fe8eccad4425fd024516fac2ebc0a39610441a0.zip | |
HID: sensor-hub: Fixup for Lenovo ThinkPad Helix 2 sensor hub report
There is an error in the report descriptor of the Thinkpad Helix 2 where
logical minimum value (557376) is greater than logical maximum (491200)
for all of the magnetic flux axis data fields. This error results in a
report descriptor parsing failure that causes the sensors attached to the
hub not to be detected.
dmesg excerpt:
[ 19.866905] drivers/hid/hid-core.c: logical range invalid 0x88140 0x77ec0
[ 19.866914] hid-sensor-hub 0018:2047:0855.0007: item 0 1 0 8 parsing failed
[ 19.866926] hid-sensor-hub 0018:2047:0855.0007: parse failed
[ 19.866933] hid-sensor-hub: probe of 0018:2047:0855.0007 failed with error -22
Add a report fixup to change magnetic flux logical minimums to -557376
for the parsing to succeed and the sensors to get detected.
After applying the fix the sensors get detected, with corresponding drivers
(hid-accel-3d,hid-gyro-3d,etc) loaded, and its possible to read their values.
Signed-off-by: Fernando D S Lima <fernandodsl@gmail.com>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-core.c')
0 files changed, 0 insertions, 0 deletions