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linux/drivers/pci/pcie
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Bjorn Helgaas 5c4bd3f2f6 Revert "PCI/ASPM: Refactor L1 PM Substates Control Register programming" 
commit ff209ecc37 upstream.

This reverts commit 5e85eba6f5.

Thomas Witt reported that 5e85eba6f5 ("PCI/ASPM: Refactor L1 PM Substates
Control Register programming") broke suspend/resume on a Tuxedo
Infinitybook S 14 v5, which seems to use a Clevo L140CU Mainboard.

The main symptom is:

  iwlwifi 0000:02:00.0: Unable to change power state from D3hot to D0, device inaccessible
  nvme 0000:03:00.0: Unable to change power state from D3hot to D0, device inaccessible

and the machine is only partially usable after resume.  It can't run dmesg
and can't do a clean reboot.  This happens on every suspend/resume cycle.

Revert 5e85eba6f5 until we can figure out the root cause.

Fixes: 5e85eba6f5 ("PCI/ASPM: Refactor L1 PM Substates Control Register programming")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216877
Reported-by: Thomas Witt <kernel@witt.link>
Tested-by: Thomas Witt <kernel@witt.link>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org	# v6.1+
Cc: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2023-02-14 19:11:42 +01:00
..
aer.c PCI/AER: Iterate over error counters instead of error strings 2022-07-13 14:45:20 -05:00
aer_inject.c PCI/AER: Update aer-inject URL 2022-03-02 11:26:17 -06:00
aspm.c Revert "PCI/ASPM: Refactor L1 PM Substates Control Register programming" 2023-02-14 19:11:42 +01:00
dpc.c PCI/DPC: Quirk PIO log size for certain Intel Root Ports 2022-09-27 18:13:18 -05:00
edr.c PCI/EDR: Log only ACPI_NOTIFY_DISCONNECT_RECOVER events 2020-04-24 18:33:29 -05:00
err.c PCI/ERR: Recognize disconnected devices in report_error_detected() 2022-06-08 15:08:40 -05:00
Kconfig PCI/AER: Update aer-inject URL 2022-03-02 11:26:17 -06:00
Makefile PCI/ERR: Reduce compile time for CONFIG_PCIEAER=n 2021-10-16 09:16:59 -05:00
pme.c PCI/PME: Use PCI_POSSIBLE_ERROR() to check config reads 2021-11-18 14:13:18 -06:00
portdrv.h PCI/portdrv: Remove unused pcie_port_bus_{,un}register() declarations 2021-10-15 14:25:18 -05:00
portdrv_core.c PCI/portdrv: Don't disable AER reporting in get_port_device_capability() 2022-07-13 14:43:40 -05:00
portdrv_pci.c PCI: portdrv: Set driver_managed_dma 2022-04-28 15:32:20 +02:00
ptm.c PCI/PTM: Reorder functions in logical order 2022-09-12 15:29:52 -05:00
rcec.c PCI/RCEC: Fix RCiEP device to RCEC association 2021-03-10 15:10:46 -06:00