usb: gadget: composite: fix req->length in composite_setup()

When USB CV MSC tests are run on f_mass_storage gadget
Bulk Only Mass Storage Reset fails since req->length
is set to USB_BUFSIZ=1024 in composite_setup().

Initialize req->length to zero to fix this.

Signed-off-by: Maulik Mankad <maulik@ti.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 53e0496c71b5c9705284c33ae15dc3be97d5b6bb..c2251c40a205cdff9b7672f451a39fbe477d9e6a 100644 (file)
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -813,7 +813,7 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
         */
        req->zero = 0;
        req->complete = composite_setup_complete;
-       req->length = USB_BUFSIZ;
+       req->length = 0;
        gadget->ep0->driver_data = cdev;
 
        switch (ctrl->bRequest) {