[Intel-gfx] New "RPM wakelock ref not held during HW access" in 4.12-rc1 ?

[Jani Nikula]

On Mon, 15 May 2017, Hans de Goede <hdegoede at redhat.com> wrote:
> Hi,
>
> I'm seeing this on suspend/resume on a GPD-win,
> cherrytrail z8700 device:

Ville, does

commit 668e3b014afb66ab29e134bca7c258527273ac75
Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
Date:   Thu Apr 27 19:02:20 2017 +0300

    drm/i915: Fix runtime PM for LPE audio

in drm-intel-fixes address this?

BR,
Jani.



>
> [   75.514651] RPM wakelock ref not held during HW access
> [   75.514827] ------------[ cut here ]------------
> [   75.515025] WARNING: CPU: 2 PID: 1832 at drivers/gpu/drm/i915/intel_drv.h:1780 fwtable_write32+0x1d3/0x240 [i915]
> ...
> [   75.515704] RIP: 0010:fwtable_write32+0x1d3/0x240 [i915]
> ...
> [   75.515767] Call Trace:
> [   75.515952]  lpe_audio_irq_unmask+0x6a/0xc0 [i915]
> [   75.515972]  irq_enable+0x3a/0x50
> [   75.515984]  __enable_irq+0x34/0x60
> [   75.515996]  resume_irqs+0x8f/0xd0
> [   75.516007]  resume_device_irqs+0x10/0x20
> [   75.516021]  dpm_resume_noirq+0x23e/0x310
> [   75.516041]  suspend_devices_and_enter+0x2f3/0x7f0
> [   75.516055]  ? finish_wait+0x80/0x80
> [   75.516067]  pm_suspend+0x335/0x3a0
> [   75.516078]  state_store+0x85/0xf0
> [   75.516095]  kobj_attr_store+0xf/0x20
> [   75.516108]  sysfs_kf_write+0x37/0x40
> [   75.516117]  kernfs_fop_write+0x11c/0x1a0
> [   75.516132]  __vfs_write+0x37/0x160
> [   75.516145]  ? selinux_file_permission+0xfb/0x120
> [   75.516158]  ? security_file_permission+0x3b/0xc0
> [   75.516169]  vfs_write+0xb1/0x1a0
> [   75.516180]  SyS_write+0x55/0xc0
> [   75.516197]  entry_SYSCALL_64_fastpath+0x1a/0xa5
> ...
> [   76.584235] PM: early resume of devices complete after 1067.477 msecs
>
> If someone has a fix for this they want me to try, let me know.
>
> Regards,
>
> Hans
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> Intel-gfx at lists.freedesktop.org
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-- 
Jani Nikula, Intel Open Source Technology Center