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| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2022-05-12 01:04:48 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-05-12 18:32:25 +0200 |
| commit | 424140d31ba1c613e7a087caf87723d0273f4dae (patch) | |
| tree | c460a1e293d7b2e581e2e85b6f6af7f747a8bbea /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 25355e046d295bc15bb0d235eff019da67e245d3 (diff) | |
xhci: prevent U2 link power state if Intel tier policy prevented U1
Don't enable U1 or U2 Link powermanagenet (LPM) states for USB3
devices connected to tier 2 or further hubs.
For unknown reasons we previously only prevented U1.
Be consistent, and prevent both U1/U2 states if tier policy doesn't
allow LPM.
Also check the tier policy a bit earlier, and return if U1/U2 is
not allowed. This avoids unnecessary xhci MEL commands.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20220511220450.85367-8-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions