[CIFS] list entry can not return null

Signed-off-by: Steve French <sfrench@us.ibm.com>

fs/cifs/cifs_debug.c

@@ -79,7 +79,6 @@ void cifs_dump_mids(struct TCP_Server_Info *server)
 	spin_lock(&GlobalMid_Lock);
 	list_for_each(tmp, &server->pending_mid_q) {
 		mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
-		if (mid_entry) {
 		cERROR(1, ("State: %d Cmd: %d Pid: %d Tsk: %p Mid %d",
 			mid_entry->midState,
 			(int)mid_entry->command,
@@ -101,7 +100,6 @@ void cifs_dump_mids(struct TCP_Server_Info *server)
 				mid_entry->resp_buf, 62);
 		}
 	}
-	}
 	spin_unlock(&GlobalMid_Lock);
 }
 #endif /* CONFIG_CIFS_DEBUG2 */
@@ -163,9 +161,7 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
 				mid_entry = list_entry(tmp1, struct
 					mid_q_entry,
 					qhead);
-				if (mid_entry) {
-					seq_printf(m,
-							"State: %d com: %d pid:"
+				seq_printf(m, "State: %d com: %d pid:"
 						" %d tsk: %p mid %d\n",
 						mid_entry->midState,
 						(int)mid_entry->command,
@@ -173,7 +169,6 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
 						mid_entry->tsk,
 						mid_entry->mid);
 			}
-			}
 			spin_unlock(&GlobalMid_Lock);
 		}
 

fs/cifs/cifsfs.c

@@ -931,7 +931,6 @@ static int cifs_oplock_thread(void *dummyarg)
 		} else {
 			oplock_item = list_entry(GlobalOplock_Q.next,
 						struct oplock_q_entry, qhead);
-			if (oplock_item) {
 			cFYI(1, ("found oplock item to write out"));
 			pTcon = oplock_item->tcon;
 			inode = oplock_item->pinode;
@@ -944,11 +943,10 @@ static int cifs_oplock_thread(void *dummyarg)
 				the call */
 			/* mutex_lock(&inode->i_mutex);*/
 			if (S_ISREG(inode->i_mode)) {
-					rc =
-					   filemap_fdatawrite(inode->i_mapping);
-					if (CIFS_I(inode)->clientCanCacheRead
-									 == 0) {
-						waitrc = filemap_fdatawait(inode->i_mapping);
+				rc = filemap_fdatawrite(inode->i_mapping);
+				if (CIFS_I(inode)->clientCanCacheRead == 0) {
+					waitrc = filemap_fdatawait(
+							      inode->i_mapping);
 					invalidate_remote_inode(inode);
 				}
 				if (rc == 0)
@@ -974,8 +972,6 @@ static int cifs_oplock_thread(void *dummyarg)
 						false /* wait flag */);
 				cFYI(1, ("Oplock release rc = %d", rc));
 			}
-			} else
-				spin_unlock(&GlobalMid_Lock);
 			set_current_state(TASK_INTERRUPTIBLE);
 			schedule_timeout(1);  /* yield in case q were corrupt */
 		}
@@ -1001,8 +997,7 @@ static int cifs_dnotify_thread(void *dummyarg)
 		list_for_each(tmp, &GlobalSMBSessionList) {
 			ses = list_entry(tmp, struct cifsSesInfo,
 				cifsSessionList);
-			if (ses && ses->server &&
-			     atomic_read(&ses->server->inFlight))
+			if (ses->server && atomic_read(&ses->server->inFlight))
 				wake_up_all(&ses->server->response_q);
 		}
 		read_unlock(&GlobalSMBSeslock);

fs/cifs/cifssmb.c

@@ -128,7 +128,6 @@ static void mark_open_files_invalid(struct cifsTconInfo *pTcon)
 	write_lock(&GlobalSMBSeslock);
 	list_for_each_safe(tmp, tmp1, &pTcon->openFileList) {
 		open_file = list_entry(tmp, struct cifsFileInfo, tlist);
-		if (open_file)
 		open_file->invalidHandle = true;
 	}
 	write_unlock(&GlobalSMBSeslock);

fs/cifs/connect.c

@@ -151,7 +151,7 @@ cifs_reconnect(struct TCP_Server_Info *server)
 	}
 	list_for_each(tmp, &GlobalTreeConnectionList) {
 		tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
-		if ((tcon) && (tcon->ses) && (tcon->ses->server == server))
+		if ((tcon->ses) && (tcon->ses->server == server))
 			tcon->tidStatus = CifsNeedReconnect;
 	}
 	read_unlock(&GlobalSMBSeslock);
@@ -173,7 +173,6 @@ cifs_reconnect(struct TCP_Server_Info *server)
 		mid_entry = list_entry(tmp, struct
 					mid_q_entry,
 					qhead);
-		if (mid_entry) {
 		if (mid_entry->midState == MID_REQUEST_SUBMITTED) {
 				/* Mark other intransit requests as needing
 				   retry so we do not immediately mark the
@@ -182,7 +181,6 @@ cifs_reconnect(struct TCP_Server_Info *server)
 			mid_entry->midState = MID_RETRY_NEEDED;
 		}
 	}
-	}
 	spin_unlock(&GlobalMid_Lock);
 	up(&server->tcpSem);