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| author | David Brownell <david-b@pacbell.net> | 2006-04-02 10:19:43 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-04-14 11:12:24 -0700 |
| commit | 35fcca442aca1a8d927b697e7e15d3f655958bd7 (patch) | |
| tree | c1ca1ef82f8a23ba60023452c02ea595093c81a1 /drivers/usb | |
| parent | 984163338a24198863116ccf3e7762fd1fc3c663 (diff) | |
| download | linux-35fcca442aca1a8d927b697e7e15d3f655958bd7.tar.gz linux-35fcca442aca1a8d927b697e7e15d3f655958bd7.tar.bz2 linux-35fcca442aca1a8d927b697e7e15d3f655958bd7.zip | |
[PATCH] USB: gadget zero poisons OUT buffers
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>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/zero.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c index 51424f66a765..68e3d8f5da89 100644 --- a/drivers/usb/gadget/zero.c +++ b/drivers/usb/gadget/zero.c @@ -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) { |