OMAPDSS: MANAGER/APPLY: Add runtime_pm protection around wait_for_go/vsync functions
If DSS suspends within the functions dss_mgr_wait_for_go(),
dss_mgr_wait_for_go_ovl() or dss_mgr_wait_for_vsync(). It may lose it's clock
and lead to a register access failure.
Request runtime_pm around these functions.
[archit@ti.com: Moved runtime_pm calls to wait_for_go/vsync functions rather
then calling them from omap_dispc_wait_for_irq_interruptible_timeout()]
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap2/dss/apply.c b/drivers/video/omap2/dss/apply.c
index b0264a1..f145e9c 100644
--- a/drivers/video/omap2/dss/apply.c
+++ b/drivers/video/omap2/dss/apply.c
@@ -391,6 +391,10 @@
if (mgr_manual_update(mgr))
return 0;
+ r = dispc_runtime_get();
+ if (r)
+ return r;
+
irq = dispc_mgr_get_vsync_irq(mgr->id);
mp = get_mgr_priv(mgr);
@@ -431,6 +435,8 @@
}
}
+ dispc_runtime_put();
+
return r;
}
@@ -454,6 +460,10 @@
if (ovl_manual_update(ovl))
return 0;
+ r = dispc_runtime_get();
+ if (r)
+ return r;
+
irq = dispc_mgr_get_vsync_irq(ovl->manager->id);
op = get_ovl_priv(ovl);
@@ -494,6 +504,8 @@
}
}
+ dispc_runtime_put();
+
return r;
}