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authorAuke Kok <auke-jan.h.kok@intel.com>2007-10-31 15:22:00 -0700
committerDavid S. Miller <davem@davemloft.net>2008-01-28 15:03:43 -0800
commit1eae4eb2a1c784bf35ee4f8f158cd21cf8c387c1 (patch)
tree4e9de1ad1d24b201647376a21862a110e462c831 /drivers/net/e1000e/hw.h
parent93ca161027eb6a1761fb674ad7b995aedccf5f6e (diff)
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>
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