diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2011-03-17 07:44:08 (GMT) |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2011-03-17 07:44:08 (GMT) |
| commit | 1d2a1959fe534279cf37aba20b08c24c20840e52 (patch) | |
| tree | 67c0b9aa7fe22a44bf0b4af88947799203eb8f67 /drivers/usb/gadget/f_fs.c | |
| parent | 5a79ce76e9bb8f4b2cd8106ee36d15ee05013bcf (diff) | |
| parent | 054cfaacf88865bff1dd58d305443d5d6c068a08 (diff) | |
| download | linux-1d2a1959fe534279cf37aba20b08c24c20840e52.tar.xz | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into sh-latest
Diffstat (limited to 'drivers/usb/gadget/f_fs.c')
| -rw-r--r-- | drivers/usb/gadget/f_fs.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index 1499f9e..19fffcc 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -368,6 +368,14 @@ static int __ffs_ep0_queue_wait(struct ffs_data *ffs, char *data, size_t len) req->buf = data; req->length = len; + /* + * UDC layer requires to provide a buffer even for ZLP, but should + * not use it at all. Let's provide some poisoned pointer to catch + * possible bug in the driver. + */ + if (req->buf == NULL) + req->buf = (void *)0xDEADBABE; + INIT_COMPLETION(ffs->ep0req_completion); ret = usb_ep_queue(ffs->gadget->ep0, req, GFP_ATOMIC); |