drm/i915: synchronize_irq() against the actual irq

When eliminating our use of drm_irq_install() I failed to convert
all our synchronize_irq() calls to consult pdev->irq instead of
dev_priv->drm.irq. As we no longer populate dev_priv->drm.irq
we're no longer synchronizing against anything.

v2: Add intel_syncrhonize_irq() (Chris)

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reported-by: Imre Deak <imre.deak@intel.com>
Fixes: 92893a8bfadf ("drm/i915: Nuke drm_driver irq vfuncs")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111012
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190702151723.29739-1-ville.syrjala@linux.intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index 86a38116dc3abfd33ae0cfe32286f1dace1f7465..c19b958461ca66d13459f5c523c6b648ec7414ee 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -1158,7 +1158,7 @@ static void vlv_display_power_well_deinit(struct drm_i915_private *dev_priv)
        spin_unlock_irq(&dev_priv->irq_lock);
 
        /* make sure we're done processing display irqs */
-       synchronize_irq(dev_priv->drm.irq);
+       intel_synchronize_irq(dev_priv);
 
        intel_power_sequencer_reset(dev_priv);
 

diff --git a/drivers/gpu/drm/i915/display/intel_pipe_crc.c b/drivers/gpu/drm/i915/display/intel_pipe_crc.c
index 1e2c4307d05a392245f60b28e1592da5b1dc4860..9a48f7a01e7ee0126816f154280abd4d3015171d 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_pipe_crc.c
+++ b/drivers/gpu/drm/i915/display/intel_pipe_crc.c
@@ -667,5 +667,5 @@ void intel_crtc_disable_pipe_crc(struct intel_crtc *intel_crtc)
 
        I915_WRITE(PIPE_CRC_CTL(crtc->index), 0);
        POSTING_READ(PIPE_CRC_CTL(crtc->index));
-       synchronize_irq(dev_priv->drm.irq);
+       intel_synchronize_irq(dev_priv);
 }

diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index d1508f0b4c84e4b3ef4ba0eaac253ff18012ca48..c1fb5fa3952e44b6df907332115dcb9e4ba717ab 100644 (file)
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -1162,7 +1162,7 @@ bool intel_engine_is_idle(struct intel_engine_cs *engine)
        if (execlists_active(&engine->execlists)) {
                struct tasklet_struct *t = &engine->execlists.tasklet;
 
-               synchronize_hardirq(engine->i915->drm.irq);
+               synchronize_hardirq(engine->i915->drm.pdev->irq);
 
                local_bh_disable();
                if (tasklet_trylock(t)) {

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index eeecdad0e3ca3c771e96d5876f5ba320f69f0ef4..6340cec733d256699bde08d93bbcda1b72342ec4 100644 (file)
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -4081,7 +4081,7 @@ static int i915_hpd_storm_ctl_show(struct seq_file *m, void *data)
        /* Synchronize with everything first in case there's been an HPD
         * storm, but we haven't finished handling it in the kernel yet
         */
-       synchronize_irq(dev_priv->drm.irq);
+       intel_synchronize_irq(dev_priv);
        flush_work(&dev_priv->hotplug.dig_port_work);
        flush_work(&dev_priv->hotplug.hotplug_work);
 

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 73f0338faf9f96f269c46ec8692e6b1a345f6cc6..b5724ad38bf5324d2afa23981e1aa77e4cd317d8 100644 (file)
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -580,7 +580,7 @@ void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv)
        gen6_disable_pm_irq(dev_priv, GEN6_PM_RPS_EVENTS);
 
        spin_unlock_irq(&dev_priv->irq_lock);
-       synchronize_irq(dev_priv->drm.irq);
+       intel_synchronize_irq(dev_priv);
 
        /* Now that we will not be generating any more work, flush any
         * outstanding tasks. As we are called on the RPS idle path,
@@ -627,7 +627,7 @@ void gen9_disable_guc_interrupts(struct drm_i915_private *dev_priv)
        gen6_disable_pm_irq(dev_priv, dev_priv->pm_guc_events);
 
        spin_unlock_irq(&dev_priv->irq_lock);
-       synchronize_irq(dev_priv->drm.irq);
+       intel_synchronize_irq(dev_priv);
 
        gen9_reset_guc_interrupts(dev_priv);
 }
@@ -663,7 +663,7 @@ void gen11_disable_guc_interrupts(struct drm_i915_private *dev_priv)
        I915_WRITE(GEN11_GUC_SG_INTR_ENABLE, 0);
 
        spin_unlock_irq(&dev_priv->irq_lock);
-       synchronize_irq(dev_priv->drm.irq);
+       intel_synchronize_irq(dev_priv);
 
        gen11_reset_guc_interrupts(dev_priv);
 }
@@ -3680,7 +3680,7 @@ void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv,
        spin_unlock_irq(&dev_priv->irq_lock);
 
        /* make sure we're done processing display irqs */
-       synchronize_irq(dev_priv->drm.irq);
+       intel_synchronize_irq(dev_priv);
 }
 
 static void cherryview_irq_reset(struct drm_i915_private *dev_priv)
@@ -4970,7 +4970,7 @@ void intel_runtime_pm_disable_interrupts(struct drm_i915_private *dev_priv)
 {
        intel_irq_reset(dev_priv);
        dev_priv->runtime_pm.irqs_enabled = false;
-       synchronize_irq(dev_priv->drm.irq);
+       intel_synchronize_irq(dev_priv);
 }
 
 /**

diff --git a/drivers/gpu/drm/i915/i915_irq.h b/drivers/gpu/drm/i915/i915_irq.h
index 5af5654f801d9f7c6be7a508ef4e7903a67e6c9c..44d480dab03047114bf78d84242409b3c54f41e4 100644 (file)
--- a/drivers/gpu/drm/i915/i915_irq.h
+++ b/drivers/gpu/drm/i915/i915_irq.h
@@ -102,6 +102,11 @@ static inline bool intel_irqs_enabled(struct drm_i915_private *dev_priv)
        return dev_priv->runtime_pm.irqs_enabled;
 }
 
+static inline void intel_synchronize_irq(struct drm_i915_private *i915)
+{
+       synchronize_irq(i915->drm.pdev->irq);
+}
+
 int intel_get_crtc_scanline(struct intel_crtc *crtc);
 void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv,
                                     u8 pipe_mask);

diff --git a/drivers/gpu/drm/i915/intel_guc_log.c b/drivers/gpu/drm/i915/intel_guc_log.c
index e3b83ecb90b5a8bf47cf57773deedfcb5706dc51..06c09ac52c74cd06a529f3c6a4240f4e0d2eb5be 100644 (file)
--- a/drivers/gpu/drm/i915/intel_guc_log.c
+++ b/drivers/gpu/drm/i915/intel_guc_log.c
@@ -615,7 +615,7 @@ void intel_guc_log_relay_close(struct intel_guc_log *log)
        struct drm_i915_private *i915 = guc_to_i915(guc);
 
        guc_log_disable_flush_events(log);
-       synchronize_irq(i915->drm.irq);
+       intel_synchronize_irq(i915);
 
        flush_work(&log->relay.flush_work);