[Intel-gfx] [PATCH] drm/i915: storm detection documentation update

[Sivakumar Thulasimani]

From: "Thulasimani,Sivakumar" <sivakumar.thulasimani at intel.com>

Update the hotplug documentation to explain that hotplug storm
is not expected for Display port panels and hence is not handled
in current code.

Signed-off-by: Sivakumar Thulasimani <sivakumar.thulasimani at intel.com>
---
 drivers/gpu/drm/i915/intel_hotplug.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_hotplug.c b/drivers/gpu/drm/i915/intel_hotplug.c
index bac91a1..7dc5e6a 100644
--- a/drivers/gpu/drm/i915/intel_hotplug.c
+++ b/drivers/gpu/drm/i915/intel_hotplug.c
@@ -66,6 +66,10 @@
  * while before being re-enabled. The intention is to mitigate issues raising
  * from broken hardware triggering massive amounts of interrupts and grinding
  * the system to a halt.
+ *
+ * Hotplug interrupt storm is not expected on Display port panel, hence the
+ * current code only handles disabling and later enabling of HPD interrupts
+ * for HDMI panels through the storm handling set of functions.
  */
 
 enum port intel_hpd_pin_to_port(enum hpd_pin pin)
-- 
1.7.9.5