diff options
| author | Auke Kok <auke-jan.h.kok@intel.com> | 2007-10-31 15:22:00 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 15:03:43 -0800 |
| commit | 1eae4eb2a1c784bf35ee4f8f158cd21cf8c387c1 (patch) | |
| tree | 4e9de1ad1d24b201647376a21862a110e462c831 /drivers/net/e1000e/82571.c | |
| parent | 93ca161027eb6a1761fb674ad7b995aedccf5f6e (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>
Diffstat (limited to 'drivers/net/e1000e/82571.c')
| -rw-r--r-- | drivers/net/e1000e/82571.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c index b6401abc17d..45f5ee29343 100644 --- a/drivers/net/e1000e/82571.c +++ b/drivers/net/e1000e/82571.c @@ -1343,7 +1343,6 @@ struct e1000_info e1000_82573_info = { | FLAG_HAS_STATS_ICR_ICT | FLAG_HAS_SMART_POWER_DOWN | FLAG_HAS_AMT - | FLAG_HAS_ASPM | FLAG_HAS_ERT | FLAG_HAS_SWSM_ON_LOAD, .pba = 20, |