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

[Jani Nikula]

On Tue, 16 May 2017, Ville Syrjälä <ville.syrjala at linux.intel.com> wrote:
> mn Tue, May 16, 2017 at 10:47:48AM +0300, Jani Nikula wrote:
>> 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?
>
> ebf5f921478b ("drm/i915: Stop pretending to mask/unmask LPE audio
> interrupts") is a more likely candidate.

Is that applicable to v4.12-rc1?

BR,
Jani.


>
>> 
>> 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
>> > _______________________________________________
>> > Intel-gfx mailing list
>> > Intel-gfx at lists.freedesktop.org
>> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
>> 
>> -- 
>> Jani Nikula, Intel Open Source Technology Center

-- 
Jani Nikula, Intel Open Source Technology Center