Fix return(0) to return 0. Signed-off-by: Michal Simek <monstr@monstr.eu>.
diff --git a/testcases/kernel/syscalls/writev/writev01.c b/testcases/kernel/syscalls/writev/writev01.c
index 565e927..aed1a61 100644
--- a/testcases/kernel/syscalls/writev/writev01.c
+++ b/testcases/kernel/syscalls/writev/writev01.c
@@ -453,7 +453,7 @@
 	close(fd[1]);
 	cleanup();
 	/*NOTREACHED*/
-	return(0);
+	return 0;
 }
 
 /*
@@ -534,7 +534,7 @@
 			 /*NOTREACHED*/
 		}
 	}
-	return(0);
+	return 0;
 }
 
 int
@@ -549,7 +549,7 @@
 			memset(c_ptr, c2, CHUNK);
 		}
 	}
-	return(0);
+	return 0;
 }
 
 void
@@ -583,5 +583,5 @@
 		tst_resm(TFAIL, "lseek Failed : errno = %d", errno);
 		fail = 1;
 	}
-	return(0);
+	return 0;
 }
diff --git a/testcases/kernel/syscalls/writev/writev02.c b/testcases/kernel/syscalls/writev/writev02.c
index 24e3094..770727a 100644
--- a/testcases/kernel/syscalls/writev/writev02.c
+++ b/testcases/kernel/syscalls/writev/writev02.c
@@ -222,7 +222,7 @@
 	close(fd[0]);
 	close(fd[1]);
 	cleanup();
-	return(0);
+	return 0;
 }
 
 #else
@@ -331,5 +331,5 @@
 		tst_resm(TFAIL, "lseek Failed : errno = %d", errno);
 		fail = 1;
 	}
-	return(0);
+	return 0;
 }
diff --git a/testcases/kernel/syscalls/writev/writev03.c b/testcases/kernel/syscalls/writev/writev03.c
index 8d98a28..ad9bebe 100644
--- a/testcases/kernel/syscalls/writev/writev03.c
+++ b/testcases/kernel/syscalls/writev/writev03.c
@@ -274,7 +274,7 @@
 	close(fd[0]);
 	close(fd[1]);
 	cleanup();
-	return(0);
+	return 0;
 }
 
 #else
@@ -378,5 +378,5 @@
 		tst_resm(TFAIL, "lseek Failed : errno = %d", errno);
 		fail = 1;
 	}
-	return(0);
+	return 0;
 }
diff --git a/testcases/kernel/syscalls/writev/writev04.c b/testcases/kernel/syscalls/writev/writev04.c
index 4371694..13dbe3b 100644
--- a/testcases/kernel/syscalls/writev/writev04.c
+++ b/testcases/kernel/syscalls/writev/writev04.c
@@ -165,7 +165,7 @@
 				 f_name, errno);
 			cleanup();
 			/*NOTREACHED*/
-			return(0);
+			return 0;
 		}
 
 //block1:
@@ -283,7 +283,7 @@
 	close(fd[0]);
 	close(fd[1]);
 	cleanup();
-	return(0);
+	return 0;
 }
 
 #else
@@ -386,5 +386,5 @@
 		tst_resm(TFAIL, "lseek Failed : errno = %d", errno);
 		fail = 1;
 	}
-	return(0);
+	return 0;
 }
diff --git a/testcases/kernel/syscalls/writev/writev05.c b/testcases/kernel/syscalls/writev/writev05.c
index 19c6931..f0a48d5 100644
--- a/testcases/kernel/syscalls/writev/writev05.c
+++ b/testcases/kernel/syscalls/writev/writev05.c
@@ -207,7 +207,7 @@
 	close(fd[0]);
 	close(fd[1]);
 	cleanup();
-	return(0);
+	return 0;
 }
 
 #else
@@ -316,5 +316,5 @@
 		tst_resm(TFAIL, "lseek Failed : errno = %d", errno);
 		fail = 1;
 	}
-	return(0);
+	return 0;
 }
diff --git a/testcases/kernel/syscalls/writev/writev06.c b/testcases/kernel/syscalls/writev/writev06.c
index d03bfe8..3bd3207 100644
--- a/testcases/kernel/syscalls/writev/writev06.c
+++ b/testcases/kernel/syscalls/writev/writev06.c
@@ -158,7 +158,7 @@
 		tst_resm(TINFO, "Exit block 1");
 	}
 	cleanup();
-	return(0);
+	return 0;
 }
 
 /*