On Mon, Sep 04, 2017 at 12:01:54PM +0200, Rafael J. Wysocki wrote:

 static const struct dev_pm_ops dw_i2c_dev_pm_ops = {
-	.prepare = dw_i2c_plat_prepare,
-	.complete = dw_i2c_plat_complete,
-	SET_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume)
-	SET_RUNTIME_PM_OPS(dw_i2c_plat_runtime_suspend,
-			   dw_i2c_plat_resume,
-			   NULL)
+	SET_LATE_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume)

This seems to cause problem with intel-lpss MFD driver because it uses
.suspend() and .resume() instead of .suspend_late() and .resume_early().
It only brings the device out of reset during .resume() which triggers
this:

[  221.066302] PM: noirq resume of devices complete after 162.461 msecs
[  221.079743] i2c_designware i2c_designware.0: Unknown Synopsys component type: 0x00000000
[  221.079749] i2c_designware i2c_designware.1: Unknown Synopsys component type: 0x00000000
[  221.079880] PM: early resume of devices complete after 13.538 msecs
...
[  222.115656] i2c_designware i2c_designware.1: controller timed out
[  222.756572] [drm] RC6 on
[  226.276006] i2c_hid i2c-DLL06E4:01: failed to reset device.
[  227.300012] i2c_designware i2c_designware.1: controller timed out
[  227.300037] i2c_hid i2c-DLL06E4:01: failed to change power setting.
[  227.300048] dpm_run_callback(): i2c_hid_resume+0x0/0xf0 [i2c_hid] returns -61
[  227.300057] PM: Device i2c-DLL06E4:01 failed to resume async: error -61

and the touchpad does not work from this point forward.