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Date: Thu, 10 Jul 2014 00:09:54 +0200 From: Francois Romieu <romieu@...zoreil.com> To: Hayes Wang <hayeswang@...ltek.com> Cc: davem@...emloft.net, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, nic_swsd@...ltek.com Subject: Re: [PATCH net v2] r8169: disable L23 Hayes Wang <hayeswang@...ltek.com> : > 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@...ltek.com> Acked-by: Francois Romieu <romieu@...zoreil.com> 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 ? -- Ueimor -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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