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[v3,0/2] Add LPS0 check() for pinctrl-amd

Message ID 20250227205049.765309-1-superm1@kernel.org (mailing list archive)
Headers show
Series Add LPS0 check() for pinctrl-amd | expand

Message

Mario Limonciello Feb. 27, 2025, 8:50 p.m. UTC 
From: Mario Limonciello <mario.limonciello@amd.com>

During suspend the pinctrl_amd driver disables the interrupts for
any GPIOs that are not marked as wake sources.

This however does not prevent them from changing the wake status
bit during suspend, it just stops the system from waking.

If the system wakes from hardware sleep for another reason (such
as plugging in the AC adapter) this wake bits might be active.

This could potentially cause problems with going back to hardware
sleep.  Add an extra debugging message when PM debugging is enabled
to help identify if this is happening.

Mario Limonciello (2):
  ACPI: Add missing prototype for non CONFIG_SUSPEND/CONFIG_X86 case
  pinctrl: amd: Add an LPS0 check() callback

 drivers/pinctrl/pinctrl-amd.c | 28 ++++++++++++++++++++++++++++
 include/linux/acpi.h          |  9 ++++++++-
 2 files changed, 36 insertions(+), 1 deletion(-)