USB: gadget: fix req length in sourcesink_setup()

The recent commit 2edb11cbac fixed req->length in the composite_setup()
function, but that will cause all g_zero tests to fail like:

root#> ./testusb -D /proc/bus/usb/002/021 -t14 -c 15000 -s 256 -v 1
unknown speed   /proc/bus/usb/002/021
/proc/bus/usb/002/021 test 14 --> 32 (Broken pipe)

We need to fix req->length in sourcesink_setup() as well to avoid this.

Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/usb/gadget/f_sourcesink.c b/drivers/usb/gadget/f_sourcesink.c
index caf2f95e0346..5a92883f4c8c 100644
--- a/drivers/usb/gadget/f_sourcesink.c
+++ b/drivers/usb/gadget/f_sourcesink.c
@@ -437,6 +437,8 @@ static int sourcesink_setup(struct usb_configuration *c,
         u16                     w_value = le16_to_cpu(ctrl->wValue);
         u16                     w_length = le16_to_cpu(ctrl->wLength);
 
+        req->length = USB_BUFSIZ;
+
         /* composite driver infrastructure handles everything except
          * the two control test requests.
          */