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78cd29d5a9
Based on a patch from Naga Chumbalkar <nagananda.chumbalkar@hp.com>:
If ASPM L0s needs to be disabled due to HW errata, do it prior to
"enabling" the device. This way if the kernel ever defaults its
aspm_policy to POLICY_POWERSAVE, then the e1000e driver will get a
chance to disable ASPM on the misbehaving device *prior* to calling
pci_enable_device_mem(). This will be useful in situations
where the BIOS indicates ASPM support on the server by clearing the
ACPI FADT "ASPM Controls" bit.
Note:
The kernel (2.6.38) currently uses the BIOS "default" as its aspm_policy.
However, Linux distros can diverge from that and set the default to
"powersave".
v2: o cleanup namespace pollution of e1000e_disable_aspm(),
o fix type and initialization of the new aspm_disable_flag in a few
functions, and
o redefine FLAG2_DISABLE_ASPM_L0S to the first unused bit in
adapter->flags2.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Cc: Naga Chumbalkar <nagananda.chumbalkar@hp.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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|---|---|---|
| .. | ||
| 82571.c | ||
| defines.h | ||
| e1000.h | ||
| es2lan.c | ||
| ethtool.c | ||
| hw.h | ||
| ich8lan.c | ||
| lib.c | ||
| Makefile | ||
| netdev.c | ||
| param.c | ||
| phy.c | ||