Merge tag 'drm-intel-next-2017-11-17-1' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

More change sets for 4.16:

- Many improvements for selftests and other igt tests (Chris)
- Forcewake with PUNIT->PMIC bus fixes and robustness (Hans)
- Define an engine class for uABI (Tvrtko)
- Context switch fixes and improvements (Chris)
- GT powersavings and power gating simplification and fixes (Chris)
- Other general driver clean-ups (Chris, Lucas, Ville)
- Removing old, useless and/or bad workarounds (Chris, Oscar, Radhakrishna)
- IPS, pipe config, etc in preparation for another Fast Boot attempt (Maarten)
- OA perf fixes and support to Coffee Lake and Cannonlake (Lionel)
- Fixes around GPU fault registers (Michel)
- GEM Proxy (Tina)
- Refactor of Geminilake and Cannonlake plane color handling (James)
- Generalize transcoder loop (Mika Kahola)
- New HW Workaround for Cannonlake and Geminilake (Rodrigo)
- Resume GuC before using GEM (Chris)
- Stolen Memory handling improvements (Ville)
- Initialize entry in PPAT for older compilers (Chris)
- Other fixes and robustness improvements on execbuf (Chris)
- Improve logs of GEM_BUG_ON (Mika Kuoppala)
- Rework with massive rename of GuC functions and files (Sagar)
- Don't sanitize frame start delay if pipe is off (Ville)
- Cannonlake clock fixes (Rodrigo)
- Cannonlake HDMI 2.0 support (Rodrigo)
- Add a GuC doorbells selftest (Michel)
- Add might_sleep() check to our wait_for() (Chris)

Many GVT changes for 4.16:

- CSB HWSP update support (Weinan)
- GVT debug helpers, dyndbg and debugfs (Chuanxiao, Shuo)
- full virtualized opregion (Xiaolin)
- VM health check for sane fallback (Fred)
- workload submission code refactor for future enabling (Zhi)
- Updated repo URL in MAINTAINERS (Zhenyu)
- other many misc fixes

* tag 'drm-intel-next-2017-11-17-1' of git://anongit.freedesktop.org/drm/drm-intel: (260 commits)
  drm/i915: Update DRIVER_DATE to 20171117
  drm/i915: Add a policy note for removing workarounds
  drm/i915/selftests: Report ENOMEM clearly for an allocation failure
  Revert "drm/i915: Display WA #1133 WaFbcSkipSegments:cnl, glk"
  drm/i915: Calculate g4x intermediate watermarks correctly
  drm/i915: Calculate vlv/chv intermediate watermarks correctly, v3.
  drm/i915: Pass crtc_state to ips toggle functions, v2
  drm/i915: Pass idle crtc_state to intel_dp_sink_crc
  drm/i915: Enable FIFO underrun reporting after initial fastset, v4.
  drm/i915: Mark the userptr invalidate workqueue as WQ_MEM_RECLAIM
  drm/i915: Add might_sleep() check to wait_for()
  drm/i915/selftests: Add a GuC doorbells selftest
  drm/i915/cnl: Extend HDMI 2.0 support to CNL.
  drm/i915/cnl: Simplify dco_fraction calculation.
  drm/i915/cnl: Don't blindly replace qdiv.
  drm/i915/cnl: Fix wrpll math for higher freqs.
  drm/i915/cnl: Fix, simplify and unify wrpll variable sizes.
  drm/i915/cnl: Remove useless conversion.
  drm/i915/cnl: Remove spurious central_freq.
  drm/i915/selftests: exercise_ggtt may have nothing to do
  ...

1 files changed, 17 insertions, 2 deletions

diff --git a/arch/x86/platform/intel/iosf_mbi.c b/arch/x86/platform/intel/iosf_mbi.c
index a952ac199741..6f37a2137a79 100644
--- a/arch/x86/platform/intel/iosf_mbi.c
+++ b/arch/x86/platform/intel/iosf_mbi.c
@@ -218,14 +218,23 @@ int iosf_mbi_register_pmic_bus_access_notifier(struct notifier_block *nb)
 }
 EXPORT_SYMBOL(iosf_mbi_register_pmic_bus_access_notifier);
 
+int iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(
+	struct notifier_block *nb)
+{
+	iosf_mbi_assert_punit_acquired();
+
+	return blocking_notifier_chain_unregister(
+				&iosf_mbi_pmic_bus_access_notifier, nb);
+}
+EXPORT_SYMBOL(iosf_mbi_unregister_pmic_bus_access_notifier_unlocked);
+
 int iosf_mbi_unregister_pmic_bus_access_notifier(struct notifier_block *nb)
 {
 	int ret;
 
 	/* Wait for the bus to go inactive before unregistering */
 	mutex_lock(&iosf_mbi_punit_mutex);
-	ret = blocking_notifier_chain_unregister(
-				&iosf_mbi_pmic_bus_access_notifier, nb);
+	ret = iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(nb);
 	mutex_unlock(&iosf_mbi_punit_mutex);
 
 	return ret;
@@ -239,6 +248,12 @@ int iosf_mbi_call_pmic_bus_access_notifier_chain(unsigned long val, void *v)
 }
 EXPORT_SYMBOL(iosf_mbi_call_pmic_bus_access_notifier_chain);
 
+void iosf_mbi_assert_punit_acquired(void)
+{
+	WARN_ON(!mutex_is_locked(&iosf_mbi_punit_mutex));
+}
+EXPORT_SYMBOL(iosf_mbi_assert_punit_acquired);
+
 #ifdef CONFIG_IOSF_MBI_DEBUG
 static u32	dbg_mdr;
 static u32	dbg_mcr;