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[RFC/RFT v2 00/12] ath9k: ASPM fixes

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This patch series try to fix ath9k ASPM. Some of patches are cleanup
only or do merging common code (with e1000e driver).

With CONFIG_PCIEASPM it's possible to change ASPM settings on runtime
via /sys/module/pcie_aspm/parameters/policy . However most drivers
I looked at assume this setting is constant. I add a callback to pci
driver to inform about the change, and allow driver to do needed hw
related changes. Currently only ath9k implement the callback, but
I think it will be useful for other drivers (i.e. iwlwifi, rtlwifi)
that do some own ASPM handling.

These patches needs wide testing as they may work on some systems
and not work on others, that can depend on PCIe bridges.

Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Cc: linux-pci@xxxxxxxxxxxxxxx
Cc: Jeff Kirsher <jeffrey.t.kirsher@xxxxxxxxx>
Cc: e1000-devel@xxxxxxxxxxxxxxxxxxxxx
---
 drivers/net/e1000e/netdev.c                |   31 ----------
 drivers/net/wireless/ath/ath9k/ar9002_hw.c |   12 ---
 drivers/net/wireless/ath/ath9k/ar9003_hw.c |   12 ---
 drivers/net/wireless/ath/ath9k/hw-ops.h    |    9 +-
 drivers/net/wireless/ath/ath9k/hw.c        |   17 +++--
 drivers/net/wireless/ath/ath9k/hw.h        |   12 +--
 drivers/net/wireless/ath/ath9k/main.c      |    8 --
 drivers/net/wireless/ath/ath9k/pci.c       |   88 ++++++++++++++++++++++-------
 drivers/pci/pcie/Makefile                  |    3 
 drivers/pci/pcie/aspm.c                    |   46 ++++++++++++++-
 include/linux/pci-aspm.h                   |    2 
 include/linux/pci.h                        |    3 
 12 files changed, 148 insertions(+), 95 deletions(-)
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