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| author | Amit Sunil Dhamne <amitsd@google.com> | 2025-08-15 11:31:51 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-17 12:14:50 +0200 |
| commit | cabb6c5f4d9e7f49bdf8c0a13c74bd93ee35f45a (patch) | |
| tree | 9282e7929870181a55a3e40cf51e5d9dcd9de276 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 45eae113dccaf8e502090ecf5b3d9e9b805add6f (diff) | |
usb: typec: maxim_contaminant: disable low power mode when reading comparator values
Low power mode is enabled when reading CC resistance as part of
`max_contaminant_read_resistance_kohm()` and left in that state.
However, it's supposed to work with 1uA current source. To read CC
comparator values current source is changed to 80uA. This causes a storm
of CC interrupts as it (falsely) detects a potential contaminant. To
prevent this, disable low power mode current sourcing before reading
comparator values.
Fixes: 02b332a06397 ("usb: typec: maxim_contaminant: Implement check_contaminant callback")
Cc: stable <stable@kernel.org>
Signed-off-by: Amit Sunil Dhamne <amitsd@google.com>
Reviewed-by: Badhri Jagan Sridharan <badhri@google.com>
Rule: add
Link: https://lore.kernel.org/stable/20250814-fix-upstream-contaminant-v1-1-801ce8089031%40google.com
Link: https://lore.kernel.org/r/20250815-fix-upstream-contaminant-v2-1-6c8d6c3adafb@google.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