diff --git a/drivers/hsi/clients/ssi_protocol.c b/drivers/hsi/clients/ssi_protocol.c
index 38e572faff43..da6a7abd584f 100644
--- a/drivers/hsi/clients/ssi_protocol.c
+++ b/drivers/hsi/clients/ssi_protocol.c
@@ -32,8 +32,6 @@
 #include <linux/hsi/hsi.h>
 #include <linux/hsi/ssi_protocol.h>
 
-void ssi_waketest(struct hsi_client *cl, unsigned int enable);
-
 #define SSIP_TXQUEUE_LEN	100
 #define SSIP_MAX_MTU		65535
 #define SSIP_DEFAULT_MTU	4000
diff --git a/drivers/hsi/controllers/omap_ssi_core.c b/drivers/hsi/controllers/omap_ssi_core.c
index 26f2c3c01297..84ba8b875199 100644
--- a/drivers/hsi/controllers/omap_ssi_core.c
+++ b/drivers/hsi/controllers/omap_ssi_core.c
@@ -17,6 +17,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/dmaengine.h>
 #include <linux/delay.h>
+#include <linux/hsi/ssi_protocol.h>
 #include <linux/seq_file.h>
 #include <linux/scatterlist.h>
 #include <linux/interrupt.h>
diff --git a/drivers/hsi/controllers/omap_ssi_port.c b/drivers/hsi/controllers/omap_ssi_port.c
index b9495b720f1b..c78d9c9f7371 100644
--- a/drivers/hsi/controllers/omap_ssi_port.c
+++ b/drivers/hsi/controllers/omap_ssi_port.c
@@ -151,23 +151,17 @@ static int ssi_div_set(void *data, u64 val)
 
 DEFINE_DEBUGFS_ATTRIBUTE(ssi_sst_div_fops, ssi_div_get, ssi_div_set, "%llu\n");
 
-static int ssi_debug_add_port(struct omap_ssi_port *omap_port,
+static void ssi_debug_add_port(struct omap_ssi_port *omap_port,
 				     struct dentry *dir)
 {
 	struct hsi_port *port = to_hsi_port(omap_port->dev);
 
 	dir = debugfs_create_dir(dev_name(omap_port->dev), dir);
-	if (!dir)
-		return -ENOMEM;
 	omap_port->dir = dir;
 	debugfs_create_file("regs", S_IRUGO, dir, port, &ssi_port_regs_fops);
 	dir = debugfs_create_dir("sst", dir);
-	if (!dir)
-		return -ENOMEM;
 	debugfs_create_file_unsafe("divisor", 0644, dir, port,
 				   &ssi_sst_div_fops);
-
-	return 0;
 }
 #endif
 
@@ -1217,11 +1211,7 @@ static int ssi_port_probe(struct platform_device *pd)
 	pm_runtime_enable(omap_port->pdev);
 
 #ifdef CONFIG_DEBUG_FS
-	err = ssi_debug_add_port(omap_port, omap_ssi->dir);
-	if (err < 0) {
-		pm_runtime_disable(omap_port->pdev);
-		goto error;
-	}
+	ssi_debug_add_port(omap_port, omap_ssi->dir);
 #endif
 
 	hsi_add_clients_from_dt(port, np);
diff --git a/include/linux/hsi/ssi_protocol.h b/include/linux/hsi/ssi_protocol.h
index 2d6f3cfa7dea..972434daa000 100644
--- a/include/linux/hsi/ssi_protocol.h
+++ b/include/linux/hsi/ssi_protocol.h
@@ -24,6 +24,7 @@ int ssip_slave_stop_tx(struct hsi_client *master);
 void ssip_reset_event(struct hsi_client *master);
 
 int ssip_slave_running(struct hsi_client *master);
+void ssi_waketest(struct hsi_client *cl, unsigned int enable);
 
 #endif /* __LINUX_SSIP_SLAVE_H__ */