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| author | Auke Kok <auke-jan.h.kok@intel.com> | 2007-10-31 22:22:00 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 23:03:43 (GMT) |
| commit | 1eae4eb2a1c784bf35ee4f8f158cd21cf8c387c1 (patch) | |
| tree | 4e9de1ad1d24b201647376a21862a110e462c831 /drivers/net/e1000 | |
| parent | 93ca161027eb6a1761fb674ad7b995aedccf5f6e (diff) | |
| download | linux-1eae4eb2a1c784bf35ee4f8f158cd21cf8c387c1.tar.xz | |
e1000e: Disable L1 ASPM power savings for 82573 mobile variants
L1 ASPM link (pci-e link power savings) has significant benefits
(~1W savings when link is active) but unfortunately does not work
correctly on any of the chipsets that have 82573 on mobile platforms
which causes various nuisances:
- eeprom reads return garbage information leading to bad eeprom
checksums
- long ping times (up to 2 seconds)
- complete system hangs (freeze/lockup)
A lot of T60 owners have been plagued by this, but other mobile
solutions also suffer from these symptoms.
Disabling L1 ASPM before we activate the PCI-E link fixes all of
these issues at the cost of some power consumption.
Remove a workaround RDTR adjustment that is no longer needed with
this new one.
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/e1000')
0 files changed, 0 insertions, 0 deletions