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[PATCH] USB: gadget zero poisons OUT buffers

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Fill OUT buffers with 0x55 before RX, so that controller driver
bugs that mangle data can be more readily detected during testing.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Brownell 2006-04-02 10:19:43 -08:00 committed by Greg Kroah-Hartman
parent 984163338a
commit 35fcca442a
1 changed files with 5 additions and 2 deletions
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7
drivers/usb/gadget/zero.c
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@ -572,9 +572,10 @@ static void source_sink_complete (struct usb_ep *ep, struct usb_request *req)
switch (status) {
case 0: /* normal completion? */
if (ep == dev->out_ep)
if (ep == dev->out_ep) {
check_read_data (dev, ep, req);
else
memset (req->buf, 0x55, req->length);
} else
reinit_write_data (dev, ep, req);
break;
@ -626,6 +627,8 @@ source_sink_start_ep (struct usb_ep *ep, gfp_t gfp_flags)
if (strcmp (ep->name, EP_IN_NAME) == 0)
reinit_write_data (ep->driver_data, ep, req);
else
memset (req->buf, 0x55, req->length);
status = usb_ep_queue (ep, req, gfp_flags);
if (status) {