| Message ID | 20250226171924.2646997-2-imre.deak@intel.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | drm/dp: Fix link training interrupted by HPD pulse | expand |
diff --git a/drivers/gpu/drm/i915/display/intel_hotplug.c b/drivers/gpu/drm/i915/display/intel_hotplug.c index 00d7b1ccf1900..ab8e71c4b0f86 100644 --- a/drivers/gpu/drm/i915/display/intel_hotplug.c +++ b/drivers/gpu/drm/i915/display/intel_hotplug.c @@ -980,6 +980,7 @@ static void queue_work_for_missed_irqs(struct drm_i915_private *i915) case HPD_MARK_DISABLED: queue_work = true; break; + case HPD_DISABLED: case HPD_ENABLED: break; default:
After suspending and resuming the detection on connectors, HPD IRQs that arrived while the detection was suspended, are handled by scheduling the intel_hotplug::hotplug work for them. All HPD pins must be at this point in either the HPD_ENABLED (set for all pins during driver loading/system resuming) or HPD_MARK_DISABLED (set by IRQ storm detection) state: the HPD_DISABLED state for a pin can be set only from the HPD_MARK_DISABLED state by the hotplug work after a storm detection (enabling polling on the given pin/connector), however the hotplug work won't be scheduled while the detection is suspended. A follow-up change will add support for blocking the HPD IRQ handling on a given HPD pin (without disabling the IRQ generation on it), after which it becomes possible to see a pin in the HPD_DISABLED state when unblocking the IRQ handling (since the blocking could've happened for an already disabled pin). Adjust queue_work_for_missed_irqs() accordingly, so that this function can be reused for unblocking the IRQ handling. Signed-off-by: Imre Deak <imre.deak@intel.com> --- drivers/gpu/drm/i915/display/intel_hotplug.c | 1 + 1 file changed, 1 insertion(+)