From: Oliver Neukum <oliver@neukum.org>
Date: Thu, 23 Oct 2008 17:35:09 +0000 (+0000)
Subject: USB: fix memory leak in cdc-acm
X-Git-Tag: v2.6.27.4~19
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=837de9e1d92bb73408088f7b5849715d90925fee;p=thirdparty%2Fkernel%2Fstable.git

USB: fix memory leak in cdc-acm

commit a496c64f1363ec4d67ebdc1e1f619ad6372a574c upstream

This fixes a memory leak on disconnect in cdc-acm

Thanks to 施金前 for finding it.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index c257453fa9dec..d996a6108901a 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -849,9 +849,10 @@ static void acm_write_buffers_free(struct acm *acm)
 {
 	int i;
 	struct acm_wb *wb;
+	struct usb_device *usb_dev = interface_to_usbdev(acm->control);
 
 	for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) {
-		usb_buffer_free(acm->dev, acm->writesize, wb->buf, wb->dmah);
+		usb_buffer_free(usb_dev, acm->writesize, wb->buf, wb->dmah);
 	}
 }