@@ -42,6 +42,7 @@
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
#include <drm/drm_probe_helper.h>
+#include <drm/drm_sysfs.h>
#include "g4x_dp.h"
#include "i915_drv.h"
@@ -5995,6 +5996,8 @@ static void intel_dp_modeset_retry_work_fn(struct work_struct *work)
struct intel_dp *intel_dp =
container_of(work, typeof(*intel_dp), modeset_retry_work);
struct drm_connector *connector = &intel_dp->attached_connector->base;
+ struct drm_property *link_status_property =
+ connector->dev->mode_config.link_status_property;
/* Set the connector's (and possibly all its downstream MST ports') link
* status to BAD.
@@ -6011,7 +6014,7 @@ static void intel_dp_modeset_retry_work_fn(struct work_struct *work)
}
mutex_unlock(&connector->dev->mode_config.mutex);
/* Send Hotplug uevent so userspace can reprobe */
- drm_kms_helper_connector_hotplug_event(connector);
+ drm_sysfs_connector_property_event(connector, link_status_property);
}
bool
When a link-training attempt fails, emit a uevent to user space that includes the trigger property, which in this case will be link-statue=Bad. This will allow userspace to parse the uevent property and better understand the reason for the previous modeset failure. Signed-off-by: Gil Dekel <gildekel@chromium.org> V2: - init link_status_property inline. --- drivers/gpu/drm/i915/display/intel_dp.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) -- Gil Dekel, Software Engineer, Google / ChromeOS Display and Graphics