diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/ehci-hcd.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 8c3e860bfce..a02dcff5eb2 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -764,8 +764,14 @@ static int ehci_urb_enqueue ( INIT_LIST_HEAD (&qtd_list); switch (usb_pipetype (urb->pipe)) { - // case PIPE_CONTROL: - // case PIPE_BULK: + case PIPE_CONTROL: + /* qh_completions() code doesn't handle all the fault cases + * in multi-TD control transfers. Even 1KB is rare anyway. + */ + if (urb->transfer_buffer_length > (16 * 1024)) + return -EMSGSIZE; + /* FALLTHROUGH */ + /* case PIPE_BULK: */ default: if (!qh_urb_transaction (ehci, urb, &qtd_list, mem_flags)) return -ENOMEM; |