Re: [PATCH net v2] r8169: disable L23
From: Francois Romieu
Date: Wed Jul 09 2014 - 18:10:13 EST
Hayes Wang <hayeswang@xxxxxxxxxxx> :
> For RTL8411, RTL8111G, RTL8402, RTL8105, and RTL8106, disable the feature
> of entering the L2/L3 link state of the PCIe. When the nic starts the process
> of entering the L2/L3 link state and the PCI reset occurs before the work
> is finished, the work would be queued and continue after the next the PCI
> reset occurs. This causes the device stays in L2/L3 link state, and the system
> couldn't find the device.
> Signed-off-by: Hayes Wang <hayeswang@xxxxxxxxxxx>
Acked-by: Francois Romieu <romieu@xxxxxxxxxxxxx>
Thanks, the explanation of the race between software induced PCI reset
and transition to PCIe L2/L3 should be clear enough. PM scared me, yet
it got worse.
Davem, would you mind to s/rtl_l23_enable/rtl_pcie_state_l2l3_enable/ or
do you want a new patch for it ?
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