[PATCH RFC 2/8] drm: Define a work struct for scheduling a uevent for modeset retry

[Manasi Navare <manasi.d.navare@intel.com>]

This work struct will be used to schedule a uevent on a separate
thread. This will be scheduled after a link train failure during modeset
to indicate a modeset retry request. It will get executed after the
current modeset is complete and all locks are released. This was
required to avoid deadlock.

Cc: dri-devel@lists.freedesktop.org
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>

Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
---
 include/drm/drm_connector.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index d499466..9218a24 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -687,6 +687,11 @@ struct drm_connector {
 	 * in case of link train failure during current modeset
 	 */
 	bool link_train_retry;
+
+	/* Work struct to schedule a uevent on link train failure for
+	 * DisplayPort.
+	 */
+	struct work_struct i915_modeset_retry_work;
 };
 
 #define obj_to_connector(x) container_of(x, struct drm_connector, base)
-- 
1.9.1

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