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| author | Kai Heng Feng <kai.heng.feng@canonical.com> | 2017-06-20 06:05:19 +0300 |
|---|---|---|
| committer | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2017-06-20 20:24:56 +0300 |
| commit | 1b1ffc57a1b2edf58e803e463980b326765a237f (patch) | |
| tree | a1032deabb22850df149be943f1060d4cb07c44f /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | 62fc743cafd07e134292d510827a80b3c01df784 (diff) | |
| download | linux-1b1ffc57a1b2edf58e803e463980b326765a237f.tar.xz | |
platform/x86: dell-laptop: Fix bogus keyboard backlight sysfs interface
Dell Latitude 3160 does not have keyboard backlight, but there is a
sysfs interface for it, which does nothing at all.
KBD_LED_ON_TOKEN is the only token can be found. Since it doesn't have
KBD_LED_OFF_TOKEN or KBD_LED_AUTO_*_TOKEN, it should be safe to assume
at least two tokens should be present to support keyboard backlight.
Not all models have ON token - they may have multiple AUTO tokens instead.
Models which do not use SMBIOS token to control keyboard backlight, also
have this issue. Brightness level is 0 on these models. Verified on Dell
Inspiron 3565.
Reports keyboard backlight is supported only when at least two modes are
present.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions