Index: uspace/lib/drv/generic/driver.c
===================================================================
--- uspace/lib/drv/generic/driver.c	(revision 46e078a088fe8c3ab8b11e525495ff063c8d7aca)
+++ uspace/lib/drv/generic/driver.c	(revision 618f9ed0d05aeb2f9366eacc8428e206d3ead1fa)
@@ -47,4 +47,5 @@
 #include <stdlib.h>
 #include <str.h>
+#include <str_error.h>
 #include <ctype.h>
 #include <errno.h>
@@ -402,5 +403,5 @@
 			    get_remote_method(rem_iface, iface_method_idx);
 			if (iface_method_ptr == NULL) {
-				// the interface has not such method
+				/* The interface has not such method */
 				printf("%s: driver_connection_gen error - "
 				    "invalid interface method.", driver->name);
@@ -655,4 +656,6 @@
 int ddf_driver_main(driver_t *drv)
 {
+	int rc;
+
 	/*
 	 * Remember the driver structure - driver_ops will be called by generic
@@ -668,9 +671,21 @@
 	
 	/*
-	 * Register driver by device manager with generic handler for incoming
-	 * connections.
+	 * Register driver with device manager using generic handler for
+	 * incoming connections.
 	 */
-	devman_driver_register(driver->name, driver_connection);
-	
+	rc = devman_driver_register(driver->name, driver_connection);
+	if (rc != EOK) {
+		printf("Error: Failed to register driver with device manager "
+		    "(%s).\n", (rc == EEXISTS) ? "driver already started" :
+		    str_error(rc));
+		
+		return 1;
+	}
+	
+	/* Return success from the task since server has started. */
+	rc = task_retval(0);
+	if (rc != EOK)
+		return 1;
+
 	async_manager();