diff -r 600876f4508f linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.c
--- a/linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.c	Thu Aug 09 07:41:16 2007 +0200
+++ b/linux/drivers/media/dvb/dvb-core/dvb_ca_en50221.c	Sun Aug 12 14:39:07 2007 +0200
@@ -38,8 +38,15 @@
 #include <linux/spinlock.h>
 #include <linux/sched.h>
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+#include <linux/suspend.h>
+#else
+#include <linux/freezer.h>
+#endif
+
 #include "dvb_ca_en50221.h"
 #include "dvb_ringbuffer.h"
+#include "compat.h"
 
 static int dvb_ca_en50221_debug;
 
@@ -1002,6 +1009,8 @@ static int dvb_ca_en50221_thread(void *d
 	/* choose the correct initial delay */
 	dvb_ca_en50221_thread_update_delay(ca);
 
+	set_freezable();
+
 	/* main loop */
 	while (!ca->exit) {
 		/* sleep for a bit */
@@ -1009,6 +1018,8 @@ static int dvb_ca_en50221_thread(void *d
 			flags = wait_event_interruptible_timeout(ca->thread_queue,
 								 dvb_ca_en50221_thread_should_wakeup(ca),
 								 ca->delay);
+			if (try_to_freeze())
+				continue;
 			if ((flags == -ERESTARTSYS) || ca->exit) {
 				/* got signal or quitting */
 				break;