[PATCH 0/8] ARM: tegra: support LP1 suspend mode

[Marc Dietrich]

On Saturday 27 July 2013 20:20:38 Dmitry Osipenko wrote:
> 27.07.2013 20:12, Marc Dietrich пишет:
> > On Friday 26 July 2013 17:15:02 Joseph Lo wrote:
> >> This series adds the support of LP1 suspend mode for Tegra.
> >> 
> >> Verified on Seaboard, Cardhu and Dalmore.
> > 
> > tested on AC100 and worked fine, except
> > 
> > [   68.448007] PM: Syncing filesystems ... done.
> > [   71.370086] Freezing user space processes ... (elapsed 0.001 seconds)
> > done. [   71.370088] Freezing remaining freezable tasks ... (elapsed
> > 0.001 seconds) done.
> > [   71.371253] Suspending console(s) (use no_console_suspend to debug)
> > [   71.638481] PM: suspend of devices complete after 266.604 msecs
> > [   71.638905] PM: late suspend of devices complete after 0.417 msecs
> > [   71.639477] PM: noirq suspend of devices complete after 0.568 msecs
> > [   71.639480] Disabling non-boot CPUs ...
> > [   71.640242] CPU1: shutdown
> > [   71.641216] Entering suspend state LP1
> > [   71.641267] Enabling non-boot CPUs ...
> > [   71.643125] CPU1: Booted secondary processor
> > [   71.643449] CPU1 is up
> > [   71.643786] PM: noirq resume of devices complete after 0.331 msecs
> > [   71.644300] PM: early resume of devices complete after 0.364 msecs
> > [   71.648038] ------------[ cut here ]------------
> > [   71.648061] WARNING: CPU: 0 PID: 1025 at kernel/irq/manage.c:529
> > irq_set_irq_wake+0xb8/0xf0()
> > [   71.648064] Unbalanced IRQ 384 wake disable
> > [   71.648068] Modules linked in:
> > [   71.648075] CPU: 0 PID: 1025 Comm: bash Not tainted 3.11.0-rc2-
> > next-20130726-00008-gef01509-dirty #6
> > [   71.648107] [<c001551c>] (unwind_backtrace+0x0/0xf8) from [<c001154c>]
> > (show_stack+0x10/0x14)
> > [   71.648128] [<c001154c>] (show_stack+0x10/0x14) from [<c0515288>]
> > (dump_stack+0x80/0xc4)
> > [   71.648142] [<c0515288>] (dump_stack+0x80/0xc4) from [<c0025340>]
> > (warn_slowpath_common+0x64/0x88)
> > [   71.648151] [<c0025340>] (warn_slowpath_common+0x64/0x88) from
> > [<c00253f8>] (warn_slowpath_fmt+0x30/0x40)
> > [   71.648161] [<c00253f8>] (warn_slowpath_fmt+0x30/0x40) from
> > [<c007ff8c>]
> > (irq_set_irq_wake+0xb8/0xf0)
> > [   71.648178] [<c007ff8c>] (irq_set_irq_wake+0xb8/0xf0) from [<c0334d00>]
> > (tps6586x_rtc_resume+0x30/0x38)
> > [   71.648192] [<c0334d00>] (tps6586x_rtc_resume+0x30/0x38) from
> > [<c02951d0>] (platform_pm_resume+0x2c/0x4c)
> > [   71.648202] [<c02951d0>] (platform_pm_resume+0x2c/0x4c) from
> > [<c0299d40>] (dpm_run_callback.isra.5+0x18/0x38)
> > [   71.648211] [<c0299d40>] (dpm_run_callback.isra.5+0x18/0x38) from
> > [<c029a044>] (device_resume+0xb0/0x170)
> > [   71.648219] [<c029a044>] (device_resume+0xb0/0x170) from [<c029aeb4>]
> > (dpm_resume+0xe8/0x20c)
> > [   71.648227] [<c029aeb4>] (dpm_resume+0xe8/0x20c) from [<c029b174>]
> > (dpm_resume_end+0xc/0x18)
> > [   71.648245] [<c029b174>] (dpm_resume_end+0xc/0x18) from [<c005e480>]
> > (suspend_devices_and_enter+0xdc/0x2f8)
> > [   71.648256] [<c005e480>] (suspend_devices_and_enter+0xdc/0x2f8) from
> > [<c005e810>] (pm_suspend+0x174/0x1e8)
> > [   71.648265] [<c005e810>] (pm_suspend+0x174/0x1e8) from [<c005d710>]
> > (state_store+0x6c/0xbc)
> > [   71.648285] [<c005d710>] (state_store+0x6c/0xbc) from [<c01eca78>]
> > (kobj_attr_store+0x14/0x20)
> > [   71.648298] [<c01eca78>] (kobj_attr_store+0x14/0x20) from [<c011e970>]
> > (sysfs_write_file+0x168/0x198)
> > [   71.648312] [<c011e970>] (sysfs_write_file+0x168/0x198) from
> > [<c00cd060>] (vfs_write+0xb0/0x188)
> > [   71.648321] [<c00cd060>] (vfs_write+0xb0/0x188) from [<c00cd410>]
> > (SyS_write+0x3c/0x70)
> > [   71.648330] [<c00cd410>] (SyS_write+0x3c/0x70) from [<c000e560>]
> > (ret_fast_syscall+0x0/0x30)
> > [   71.648334] ---[ end trace e5ed8212ac4db5da ]---
> > [   72.063578] mmc1: power class selection to bus width 8 failed
> > [   72.297753] usb 2-1: reset high-speed USB device number 2 using
> > tegra-ehci [   72.567736] usb 3-1: reset high-speed USB device number 2
> > using tegra-ehci [   73.022058] usb 3-1.3: reset high-speed USB device
> > number 4 using tegra- ehci
> > [   73.216064] usb 3-1.2: reset high-speed USB device number 3 using
> > tegra-
> > ehci
> > [   73.360225] PM: resume of devices complete after 1715.937 msecs
> > [   73.361008] Restarting tasks ... done.
> > 
> > and sdcard being offline after resume (fixed by
> > CONFIG_MMC_UNSAFE_RESUME=y). Anyway, thanks for your great work!
> > 
> > Tested-By: Marc Dietrich <marvin24 at gmx.de>
> 
> I had same warn on 3.8.
> https://bitbucket.org/digetx/picasso-kernel/commits/a86dc95ab48dd77eaa046384
> 4cdf88a5acf9d842

Stephen Warren said on IRC that this is known and on the internal bug tracker 
already. I just posted it so others are not surprised. Well, I should have 
added that it's a know problem. Sorry for that.

Marc