--- atmclip.h.orig	Tue Oct 16 10:34:43 2001
+++ atmclip.h	Tue Oct 16 10:35:13 2001
@@ -23,7 +23,7 @@
 	struct atm_vcc	*vcc;		/* VCC descriptor */
 	struct atmarp_entry *entry;	/* ATMARP table entry, NULL if IP addr.
 					   isn't known yet */
-	int		xoff;		/* 1 if send buffer is full */
+	volatile int	xoff;		/* 1 if send buffer is full */
 	unsigned char	encap;		/* 0: NULL, 1: LLC/SNAP */
 	unsigned long	last_use;	/* last send or receive operation */
 	unsigned long	idle_timeout;	/* keep open idle for so many jiffies*/