diff --git a/drivers/staging/ramster/zcache-main.c b/drivers/staging/ramster/zcache-main.c
index 24b3d4a5e176..86e19d6d3b89 100644
--- a/drivers/staging/ramster/zcache-main.c
+++ b/drivers/staging/ramster/zcache-main.c
@@ -1338,10 +1338,10 @@ static int zcache_local_new_pool(uint32_t flags)
 	return zcache_new_pool(LOCAL_CLIENT, flags);
 }
 
-int zcache_autocreate_pool(int cli_id, int pool_id, bool eph)
+int zcache_autocreate_pool(unsigned int cli_id, unsigned int pool_id, bool eph)
 {
 	struct tmem_pool *pool;
-	struct zcache_client *cli = NULL;
+	struct zcache_client *cli;
 	uint32_t flags = eph ? 0 : TMEM_POOL_PERSIST;
 	int ret = -1;
 
@@ -1350,8 +1350,10 @@ int zcache_autocreate_pool(int cli_id, int pool_id, bool eph)
 		goto out;
 	if (pool_id >= MAX_POOLS_PER_CLIENT)
 		goto out;
-	else if ((unsigned int)cli_id < MAX_CLIENTS)
-		cli = &zcache_clients[cli_id];
+	if (cli_id >= MAX_CLIENTS)
+		goto out;
+
+	cli = &zcache_clients[cli_id];
 	if ((eph && disable_cleancache) || (!eph && disable_frontswap)) {
 		pr_err("zcache_autocreate_pool: pool type disabled\n");
 		goto out;
diff --git a/drivers/staging/ramster/zcache.h b/drivers/staging/ramster/zcache.h
index c59666e6d717..81722b33b087 100644
--- a/drivers/staging/ramster/zcache.h
+++ b/drivers/staging/ramster/zcache.h
@@ -42,7 +42,7 @@ extern void zcache_decompress_to_page(char *, unsigned int, struct page *);
 #ifdef CONFIG_RAMSTER
 extern void *zcache_pampd_create(char *, unsigned int, bool, int,
 				struct tmem_handle *);
-extern int zcache_autocreate_pool(int, int, bool);
+int zcache_autocreate_pool(unsigned int cli_id, unsigned int pool_id, bool eph);
 #endif
 
 #define MAX_POOLS_PER_CLIENT 16