From: Kevin O'Connor <kevin@koconnor.net>
Date: Fri, 17 Jan 2014 23:43:10 +0000 (-0500)
Subject: ehci: memset the qTD structures in ehci_alloc_intr_pipe
X-Git-Tag: rel-1.7.5-rc1~82
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=7d2fd49d9244f70e65210753686ca7c1687a3a78;p=seabios.git

ehci: memset the qTD structures in ehci_alloc_intr_pipe

The qTD structures were not being cleared in ehci_alloc_intr_pipe()
and it was possible that garbage could have been in some of the
fields.  Also, memset the data array for sanity purposes.

A similar fix is in the Chromium seabios repo (3e711dc261).

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
---

diff --git a/src/hw/usb-ehci.c b/src/hw/usb-ehci.c
index 10c92fe..9d9427b 100644
--- a/src/hw/usb-ehci.c
+++ b/src/hw/usb-ehci.c
@@ -409,6 +409,8 @@ ehci_alloc_intr_pipe(struct usbdevice_s *usbdev
         goto fail;
     }
     memset(pipe, 0, sizeof(*pipe));
+    memset(tds, 0, sizeof(*tds) * count);
+    memset(data, 0, maxpacket * count);
     ehci_desc2pipe(pipe, usbdev, epdesc);
     pipe->next_td = pipe->tds = tds;
     pipe->data = data;