usb: raw-gadget: do not limit transfer length

Drop the check on the maximum transfer length in Raw Gadget for both
control and non-control transfers.

Limiting the transfer length causes a problem with emulating USB devices
whose full configuration descriptor exceeds PAGE_SIZE in length.

Overall, there does not appear to be any reason to enforce any kind of
transfer length limit on the Raw Gadget side for either control or
non-control transfers, so let's just drop the related check.

Cc: stable <stable@kernel.org>
Fixes: f2c2e71 ("usb: gadget: add raw-gadget interface")
Signed-off-by: Andrey Konovalov <andreyknvl@gmail.com>
Link: https://patch.msgid.link/a6024e8eab679043e9b8a5defdb41c4bda62f02b.1761085528.git.andreyknvl@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: xairy

drivers/usb/gadget/legacy/raw_gadget.c

@@ -667,8 +667,6 @@ static void *raw_alloc_io_data(struct usb_raw_ep_io *io, void __user *ptr,
 		return ERR_PTR(-EINVAL);
 	if (!usb_raw_io_flags_valid(io->flags))
 		return ERR_PTR(-EINVAL);
-	if (io->length > PAGE_SIZE)
-		return ERR_PTR(-EINVAL);
 	if (get_from_user)
 		data = memdup_user(ptr + sizeof(*io), io->length);
 	else {