OMAPDSS: APPLY: fix NULL pointer deref when mgr is not set

extra_info_update_ongoing() goes through all overlays, but doesn't check
if the overlay is connected to a manager. This leads to a crash whenever
an overlay has been detached.

Add a check to skip the non-connected overlays.

Reported-by: Rob Clark <rob@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/video/omap2/dss/apply.c b/drivers/video/omap2/dss/apply.c
index 0a6fb8de19c0..052dc874cd3d 100644
--- a/drivers/video/omap2/dss/apply.c
+++ b/drivers/video/omap2/dss/apply.c
@@ -327,6 +327,9 @@ static bool extra_info_update_ongoing(void)
                 ovl = omap_dss_get_overlay(i);
                 op = get_ovl_priv(ovl);
 
+                if (!ovl->manager)
+                        continue;
+
                 mp = get_mgr_priv(ovl->manager);
 
                 if (!mp->enabled)