Re: [PATCH v3 3/5] net: asix: Fix AX88772x resume failures
From: Jon Hunter <hidden>
Date: 2016-11-10 12:01:21
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Hi Robert, On 29/08/16 14:32, robert.foss-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org wrote:
From: Robert Foss <robert.foss-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org> From: Allan Chou <allan-knRN6Y/kmf1NUHwG+Fw1Kw@public.gmane.org> 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 <allan-knRN6Y/kmf1NUHwG+Fw1Kw@public.gmane.org> Signed-off-by: Robert Foss <robert.foss-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org> Tested-by: Robert Foss <robert.foss-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
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