OMAP: DSS2: OMAPFB: Add some locking debug checks
Trigger WARN_ON() messages from various places in the code in case the
memory region is not currently locked.
Signed-off-by: Ville Syrjälä <ville.syrjala@nokia.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c
index a3f72ba..a545e8d 100644
--- a/drivers/video/omap2/omapfb/omapfb-main.c
+++ b/drivers/video/omap2/omapfb/omapfb-main.c
@@ -668,6 +668,8 @@
DBG("check_fb_var %d\n", ofbi->id);
+ WARN_ON(!atomic_read(&ofbi->region->lock_count));
+
r = fb_mode_to_dss_mode(var, &mode);
if (r) {
DBG("cannot convert var to omap dss mode\n");
@@ -873,6 +875,8 @@
int rotation = var->rotate;
int i;
+ WARN_ON(!atomic_read(&ofbi->region->lock_count));
+
for (i = 0; i < ofbi->num_overlays; i++) {
if (ovl != ofbi->overlays[i])
continue;
@@ -966,6 +970,8 @@
fill_fb(fbi);
#endif
+ WARN_ON(!atomic_read(&ofbi->region->lock_count));
+
for (i = 0; i < ofbi->num_overlays; i++) {
ovl = ofbi->overlays[i];