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Date: Tue, 27 Apr 2010 10:18:37 -0700 (PDT) From: David Miller <davem@...emloft.net> To: jeffrey.t.kirsher@...el.com Cc: netdev@...r.kernel.org, gospo@...hat.com, mjg@...hat.com, bruce.w.allan@...el.com Subject: Re: [net-2.6 PATCH] e1000e: enable/disable ASPM L0s and L1 and ERT according to hardware errata From: Jeff Kirsher <jeffrey.t.kirsher@...el.com> Date: Tue, 27 Apr 2010 06:33:04 -0700 > From: Bruce Allan <bruce.w.allan@...el.com> > > Prompted by a previous patch submitted by Matthew Garret <mjg@...hat.com>, > further digging into errata documentation reveals the current enabling or > disabling of ASPM L0s and L1 states for certain parts supported by this > driver are incorrect. 82571 and 82572 should always disable L1. For > standard frames, 82573/82574/82583 can enable L1 but L0s must be disabled, > and for jumbo frames 82573/82574 must disable L1. This allows for some > parts to enable L1 in certain configurations leading to better power > savings. > > Also according to the same errata, Early Receive (ERT) should be disabled > on 82573 when using jumbo frames. > > Cc: Matthew Garret <mjg@...hat.com> > Signed-off-by: Bruce Allan <bruce.w.allan@...el.com> > Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com> Applied. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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