From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jon Hunter Subject: Re: [PATCH v3 3/5] net: asix: Fix AX88772x resume failures Date: Thu, 10 Nov 2016 12:01:03 +0000 Message-ID: <77fa76d6-ef63-47db-a316-93b3a0c0705b@nvidia.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit To: , , , , , , , , , , , , , , , , , , Return-path: In-Reply-To: Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org Hi Robert, On 29/08/16 14:32, robert.foss-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org wrote: > From: Robert Foss > > From: Allan Chou > > The change fixes AX88772x resume failure by > - Restore incorrect AX88772A PHY registers when resetting > - Need to stop MAC operation when suspending > - Need to restart MII when restoring PHY > > Signed-off-by: Allan Chou > Signed-off-by: Robert Foss > Tested-by: Robert Foss After this commit, I have started seeing the following messages during system suspend on various tegra boards using asix ethernet dongles ... [ 288.667010] PM: Syncing filesystems ... done. [ 288.672223] Freezing user space processes ... (elapsed 0.001 seconds) done. [ 288.680505] Double checking all user space processes after OOM killer disable... (elapsed 0.000 seconds) [ 288.690193] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [ 288.698987] Suspending console(s) (use no_console_suspend to debug) [ 288.706605] asix 1-1:1.0 eth0: Failed to read reg index 0x0000: -19 [ 288.706613] asix 1-1:1.0 eth0: Error reading Medium Status register: ffffffed [ 288.706621] asix 1-1:1.0 eth0: Failed to write reg index 0x0000: -19 [ 288.706629] asix 1-1:1.0 eth0: Failed to write Medium Mode mode to 0xfeed: ffffffed [ 288.759167] PM: suspend of devices complete after 52.772 msecs Interestingly, it only seems to happen if the ethernet is in a disconnected state when entering suspend. I have not had chance to look at this any further, but wanted to see if you had any thoughts. Cheers Jon -- nvpublic -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html