diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index edd5b29..1ab33eb 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -188,6 +188,8 @@
 	/* multiplexed reads or writes */
 	unsigned int maxBuf;	/* maxBuf specifies the maximum */
 	/* message size the server can send or receive for non-raw SMBs */
+	/* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */
+	/* when socket is setup (and during reconnect) before NegProt sent */
 	unsigned int max_rw;	/* maxRw specifies the maximum */
 	/* message size the server can send or receive for */
 	/* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 257b6d8..10011e9 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -341,7 +341,7 @@
 	 * We cannot send an echo until the NEGOTIATE_PROTOCOL request is done.
 	 * Also, no need to ping if we got a response recently
 	 */
-	if (server->tcpStatus != CifsGood ||
+	if ((server->tcpStatus != CifsGood) || (server->maxBuf == 0) ||
 	    time_before(jiffies, server->lstrp + SMB_ECHO_INTERVAL - HZ))
 		goto requeue_echo;