[PATCH 2/3] drm: add async version of hpd_irq_event

[Jesse Barnes <jbarnes@virtuousgeek.org>]

In some cases, the callers of this function may not need the return
value and delaying the uevent is ok.  So add an async version of the
function for use in those cases.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
---
 drivers/gpu/drm/drm_probe_helper.c | 8 ++++++++
 include/drm/drm_crtc_helper.h      | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c
index 79f07f2..f3aee4a 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -446,3 +446,11 @@ bool drm_helper_hpd_irq_event(struct drm_device *dev)
 	return changed;
 }
 EXPORT_SYMBOL(drm_helper_hpd_irq_event);
+
+void drm_helper_hpd_irq_event_async(void *data, async_cookie_t cookie)
+{
+	struct drm_device *dev = data;
+
+	drm_helper_hpd_irq_event(dev);
+}
+EXPORT_SYMBOL(drm_helper_hpd_irq_event_async);
diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index a3d75fe..4f4ed9c 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -33,6 +33,7 @@
 #ifndef __DRM_CRTC_HELPER_H__
 #define __DRM_CRTC_HELPER_H__
 
+#include <linux/async.h>
 #include <linux/spinlock.h>
 #include <linux/types.h>
 #include <linux/idr.h>
@@ -172,6 +173,7 @@ extern int drm_helper_probe_single_connector_modes_nomerge(struct drm_connector
 extern void drm_kms_helper_poll_init(struct drm_device *dev);
 extern void drm_kms_helper_poll_fini(struct drm_device *dev);
 extern bool drm_helper_hpd_irq_event(struct drm_device *dev);
+extern void drm_helper_hpd_irq_event_async(void *data, async_cookie_t cookie);
 extern void drm_kms_helper_hotplug_event(struct drm_device *dev);
 
 extern void drm_kms_helper_poll_disable(struct drm_device *dev);
-- 
1.8.4.2