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/ -- 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
