* Andrew Lunn <andrew@xxxxxxx> [180112 13:16]: > On Fri, Jan 12, 2018 at 02:01:14PM +0100, Lars-Peter Clausen wrote: > > On 01/12/2018 01:30 PM, Rafael J. Wysocki wrote: > > > On Friday, January 12, 2018 1:23:54 PM CET Rafael J. Wysocki wrote: > > >> On Friday, January 12, 2018 2:32:57 AM CET Tony Lindgren wrote: > > >>> * Tony Lindgren <tony@xxxxxxxxxxx> [180111 17:20]: > > >>>> Well I tried to measure suspend power consumption and noticed > > >>>> that system suspend fails too hand hangs the network device: > > >>>> > > >>>> # echo mem > /sys/power/state > > >>>> [ 32.577850] PM: suspend entry (deep) > > >>>> [ 32.582031] PM: Syncing filesystems ... done. > > >>>> [ 32.598083] Freezing user space processes ... (elapsed 0.002 seconds) done. > > >>>> [ 32.608398] OOM killer disabled. > > >>>> [ 32.611846] Freezing remaining freezable tasks ... (elapsed 0.002 seconds) done. > > >>>> [ 32.622192] Suspending console(s) (use no_console_suspend to debug) > > >>>> [ 32.651123] dpm_run_callback(): mdio_bus_suspend+0x0/0x24 returns 4352 > > >>>> [ 32.651428] PM: Device 2c000000.ethernet-ffffffff:01 failed to suspend: error 4352 > > >> > > >> This looks totally bogus. > > >> > > >> First, "error" should be a negative number and we print it as int. > > >> > > >> Second, error codes are not in this range anyway. > > >> > > >>>> [ 32.653289] PM: Some devices failed to suspend, or early wake event detected > > >>>> [ 32.685455] OOM killer enabled. > > >>>> [ 32.688629] Restarting tasks ... done. > > >>>> [ 32.695983] PM: suspend exit > > >>>> ash: write error: Bad address > > >>>> > > >>>> That too works just fine at commit 70286688e5ad. > > >>> > > >>> Suspend fails at commit e2d7fe89e8ae though, so looks like we > > >>> have two separate issues. I'll try to bisect that separately. > > > > > > I guess what may happen is that something started to return positive numbers > > > which confuse things all over when passed along by its callers as error codes. > > > > > > I guess it this: https://patchwork.kernel.org/patch/10151763/ > > Hi Tony, > > Please try: > > https://patchwork.ozlabs.org/patch/859297/ > > Hopefully we will get this into net-next soon. Thanks that fixes the suspend error. And I was able to confirm that the suspend power consumption is OK. That still leaves the mystery of the runtime idle power consumption being much higher with commit e130bc1d00a4. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
