[PATCH 04/14] USB speedtouch: add defensive memory barriers

[Duncan Sands]

Defend against future maintainers.

 speedtch.c |    2 ++
 1 files changed, 2 insertions(+)

diff -Nru a/drivers/usb/misc/speedtch.c b/drivers/usb/misc/speedtch.c
--- a/drivers/usb/misc/speedtch.c	Wed May 21 00:40:14 2003
+++ b/drivers/usb/misc/speedtch.c	Wed May 21 00:40:14 2003
@@ -1220,6 +1220,7 @@
 
 finish:
 	/* ready for ATM callbacks */
+	wmb ();
 	instance->atm_dev->dev_data = instance;
 
 	usb_set_intfdata (intf, instance);
@@ -1358,6 +1359,7 @@
 	for (i = 0; i < UDSL_NUM_SND_BUFS; i++)
 		kfree (instance->send_buffers [i].base);
 
+	wmb ();
 	instance->usb_dev = NULL;
 
 	/* ATM finalize */