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authorVille Syrjälä <ville.syrjala@nokia.com>2010-03-17 21:28:50 +0200
committerTomi Valkeinen <tomi.valkeinen@nokia.com>2010-08-03 15:18:46 +0300
commit1ceafc00910439c8e5450fae189b69427725992c (patch)
tree5b98fb03b1885dc64b335965bd73686b818e368c /drivers/video/omap2/omapfb/omapfb-main.c
parent3d84b65aa63833a2ac07b1cc626984a1e1485fed (diff)
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>
Diffstat (limited to 'drivers/video/omap2/omapfb/omapfb-main.c')
-rw-r--r--drivers/video/omap2/omapfb/omapfb-main.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c
index a3f72ba79958..a545e8d4817f 100644
--- a/drivers/video/omap2/omapfb/omapfb-main.c
+++ b/drivers/video/omap2/omapfb/omapfb-main.c
@@ -668,6 +668,8 @@ int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
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 omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
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 @@ int omapfb_apply_changes(struct fb_info *fbi, int init)
fill_fb(fbi);
#endif
+ WARN_ON(!atomic_read(&ofbi->region->lock_count));
+
for (i = 0; i < ofbi->num_overlays; i++) {
ovl = ofbi->overlays[i];

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