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Amit Sunil DhamneandGreg Kroah-Hartman
4986548825
[ Upstream commitcabb6c5f4d] 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:02b332a063("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> [ adapted macro names from CCLPMODESEL to CCLPMODESEL_MASK ] Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>