Merge power management, PCI and sysfs-related material and changes
related to handling ACPI tables for 5.19-rc1:

 - Improve debug messages in the ACPI device PM code (Rafael Wysocki).

 - Block ASUS B1400CEAE from suspend to idle by default (Mario
   Limonciello).

 - Improve handling of PCI devices that are in D3cold during system
   initialization (Rafael Wysocki).

 - Fix BERT error region memory mapping (Lorenzo Pieralisi).

 - Add support for NVIDIA 16550-compatible port subtype to the SPCR
   parsing code (Jeff Brasen).

 - Use static for BGRT_SHOW kobj_attribute defines (Tom Rix).

 - Fix missing prototype warning for acpi_agdi_init() (Ilkka Koskinen).

* acpi-pm:
  ACPI: PM: Block ASUS B1400CEAE from suspend to idle by default
  ACPI: PM: Always print final debug message in acpi_device_set_power()
  ACPI: PM: Unify debug messages in acpi_device_set_power()
  ACPI: PM: Change pr_fmt() in device_pm.c
  ACPI: PM: Convert debug message in acpi_device_get_power()

* acpi-pci:
  ACPI: bus: Avoid non-ACPI device objects in walks over children
  PCI: ACPI: PM: Power up devices in D3cold before scanning them
  ACPI: PM: Introduce acpi_dev_power_up_children_with_adr()
  ACPI: bus: Introduce acpi_dev_for_each_child()

* acpi-sysfs:
  ACPI: sysfs: Fix BERT error region memory mapping

* acpi-tables:
  ACPI: AGDI: Fix missing prototype warning for acpi_agdi_init()
  ACPI: BGRT: use static for BGRT_SHOW kobj_attribute defines
  ACPI: SPCR: Add support for NVIDIA 16550-compatible port subtype

When walking the children of an ACPI device, take extra care to avoid
using to_acpi_device() on the ones that are not ACPI devices, because
that may lead to out-of-bounds access and memory corruption.

While at it, make the function passed to acpi_dev_for_each_child()
take a struct acpi_device pointer argument (instead of a struct device
one), so it is more straightforward to use.

Fixes: b7dd6298db81 ("ACPI: PM: Introduce acpi_dev_power_up_children_with_adr()")
Reported-by: kernel test robot <oliver.sang@intel.com>
BugLink: https://lore.kernel.org/lkml/20220420064725.GB16310@xsang-OptiPlex-9020/
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>

acpi_device_set_power() prints debug messages regarding its outcome
(whether or not the power state has been changed and how) in all
cases except when the device whose power state is being changed to D0
is in that power state already.

Make acpi_device_set_power() print a final debug message in that case
too and while at it, fix the indentation of the "end" label in this
function.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Introduce a function powering up all of the children of a given ACPI
device object that are power-manageable and hold valid _ADR ACPI
objects so as to make it possible to prepare the corresponding
"physical" devices for enumeration carried out by a bus type driver,
like PCI.

This function will be used in a subsequent change set.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>

Convert all of the debug messages printed by acpi_device_set_power()
to acpi_handle_debug() and adjust them slightly for consistency with
acpi_device_get_power() and other acpi_device_set_power() debug
messages.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

All messages printed by functions in this file either contain
the "ACPI" or "acpi" string regardless of the format, or they don't
need to contain it at all.

In the former case, the "ACPI:" string added by the format is
redundant, so drop it from there.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Convert the debug message printed by acpi_device_get_power() to
acpi_handle_debug(), because that function is also called when
the ACPI device object name has not been set yet and the dev_dbg()
message printed by it at that time is not useful.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Modify the ACPI code to use acpi_fetch_acpi_dev() instead of
acpi_bus_get_device() where applicable.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>

Add a convenience function to tell whether a device is in D0 state,
primarily for use in drivers' probe or remove functions on busses where
the custom is to power on the device for the duration of both.

Returns false on non-ACPI systems.

Suggested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Pull block driver updates from Jens Axboe:
 "Pretty calm round, mostly just NVMe and a bit of MD:

   - NVMe updates (via Christoph)
        - improve the APST configuration algorithm (Alexey Bogoslavsky)
        - look for StorageD3Enable on companion ACPI device
          (Mario Limonciello)
        - allow selecting the network interface for TCP connections
          (Martin Belanger)
        - misc cleanups (Amit Engel, Chaitanya Kulkarni, Colin Ian King,
          Christoph)
        - move the ACPI StorageD3 code to drivers/acpi/ and add quirks
          for certain AMD CPUs (Mario Limonciello)
        - zoned device support for nvmet (Chaitanya Kulkarni)
        - fix the rules for changing the serial number in nvmet
          (Noam Gottlieb)
        - various small fixes and cleanups (Dan Carpenter, JK Kim,
          Chaitanya Kulkarni, Hannes Reinecke, Wesley Sheng, Geert
          Uytterhoeven, Daniel Wagner)

   - MD updates (Via Song)
        - iostats rewrite (Guoqing Jiang)
        - raid5 lock contention optimization (Gal Ofri)

   - Fall through warning fix (Gustavo)

   - Misc fixes (Gustavo, Jiapeng)"

* tag 'for-5.14/drivers-2021-06-29' of git://git.kernel.dk/linux-block: (78 commits)
  nvmet: use NVMET_MAX_NAMESPACES to set nn value
  loop: Fix missing discard support when using LOOP_CONFIGURE
  nvme.h: add missing nvme_lba_range_type endianness annotations
  nvme: remove zeroout memset call for struct
  nvme-pci: remove zeroout memset call for struct
  nvmet: remove zeroout memset call for struct
  nvmet: add ZBD over ZNS backend support
  nvmet: add Command Set Identifier support
  nvmet: add nvmet_req_bio put helper for backends
  nvmet: add req cns error complete helper
  block: export blk_next_bio()
  nvmet: remove local variable
  nvmet: use nvme status value directly
  nvmet: use u32 type for the local variable nsid
  nvmet: use u32 for nvmet_subsys max_nsid
  nvmet: use req->cmd directly in file-ns fast path
  nvmet: use req->cmd directly in bdev-ns fast path
  nvmet: make ver stable once connection established
  nvmet: allow mn change if subsys not discovered
  nvmet: make sn stable once connection was established
  ...