1 files changed, 30 insertions, 0 deletions

diff --git a/drivers/video/omap2/dss/dispc-compat.c b/drivers/video/omap2/dss/dispc-compat.c
index cca38488ab27..24e1d5e974eb 100644
--- a/drivers/video/omap2/dss/dispc-compat.c
+++ b/drivers/video/omap2/dss/dispc-compat.c
@@ -205,3 +205,33 @@ void dispc_mgr_disable_sync(enum omap_channel channel)
                 WARN_ON(1);
 }
 
+int omap_dispc_wait_for_irq_interruptible_timeout(u32 irqmask,
+                unsigned long timeout)
+{
+        void dispc_irq_wait_handler(void *data, u32 mask)
+        {
+                complete((struct completion *)data);
+        }
+
+        int r;
+        DECLARE_COMPLETION_ONSTACK(completion);
+
+        r = omap_dispc_register_isr(dispc_irq_wait_handler, &completion,
+                        irqmask);
+
+        if (r)
+                return r;
+
+        timeout = wait_for_completion_interruptible_timeout(&completion,
+                        timeout);
+
+        omap_dispc_unregister_isr(dispc_irq_wait_handler, &completion, irqmask);
+
+        if (timeout == 0)
+                return -ETIMEDOUT;
+
+        if (timeout == -ERESTARTSYS)
+                return -ERESTARTSYS;
+
+        return 0;
+}