commit 2c45b6feb394337b4b468229632b8737375caf1d
author C. Adam Oldham <oldhamca@gmail.com> Thu Jun 02 17:16:34 2005 -0400
committer Greg Kroah-Hartman <gregkh@suse.de> Mon Jun 27 14:44:01 2005 -0700
tree fc212281c5e750a6d0b3d0148007462f96c1728c
parent 5da0106f0b9b13afa4a902c01d4c98b002df55ff

[PATCH] USB: Fix race condition in usblp_write

Initialize status fields in the read and write urbs to prevent a race
condition with open/read/close - open/write/close sequences.

Fixes bug #4432 at bugzilla.kernel.org

Signed-off-by: Adam Oldham <oldhamca@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/class/usblp.c

diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
index bba22e9..dff1341 100644
--- a/drivers/usb/class/usblp.c
+++ b/drivers/usb/class/usblp.c
@@ -379,6 +379,8 @@
 	usblp->writeurb->transfer_buffer_length = 0;
 	usblp->wcomplete = 1; /* we begin writeable */
 	usblp->rcomplete = 0;
+	usblp->writeurb->status = 0;
+	usblp->readurb->status = 0;
 
 	if (usblp->bidir) {
 		usblp->readcount = 0;