Re: [PATCH v3 0/4] PCI/ASPM: add sysfs attributes for controlling ASPM

[Heiner Kallweit <hkallweit1@gmail.com>]

On 23.08.2019 08:11, Heiner Kallweit wrote:
> Background of this extension is a problem with the r8169 network driver.
> Several combinations of board chipsets and network chip versions have
> problems if ASPM is enabled, therefore we have to disable ASPM per
> default. However especially on notebooks ASPM can provide significant
> power-saving, therefore we want to give users the option to enable
> ASPM. With the new sysfs attributes users can control which ASPM
> link-states are disabled.
> 
> v2:
> - use a dedicated sysfs attribute per link state
> - allow separate control of ASPM and PCI PM L1 sub-states
> 
> v3:
> - patch 3: statically allocate the attribute group
> - patch 3: replace snprintf with printf
> - add patch 4
> 
> Heiner Kallweit (4):
>   PCI/ASPM: add L1 sub-state support to pci_disable_link_state
>   PCI/ASPM: allow to re-enable Clock PM
>   PCI/ASPM: add sysfs attributes for controlling ASPM
>   PCI/ASPM: remove Kconfig option PCIEASPM_DEBUG and related code
> 
>  Documentation/ABI/testing/sysfs-bus-pci |  13 +
>  drivers/pci/pci-sysfs.c                 |   6 +-
>  drivers/pci/pci.h                       |  12 +-
>  drivers/pci/pcie/Kconfig                |   7 -
>  drivers/pci/pcie/aspm.c                 | 300 ++++++++++++++++++------
>  include/linux/pci-aspm.h                |  10 +-
>  6 files changed, 254 insertions(+), 94 deletions(-)
> 
Found a functional error during more testing. Will submit a v4 once fixed.
Please disregard this series.