usb: gadget: add usb_endpoint_descriptor to struct usb_ep

Change usb_ep_enable() prototype to use endpoint
descriptor from usb_ep.

This optimization spares the FDs from saving the
endpoint chosen descriptor. This optimization is
not full though. To fully exploit this change, one
needs to update all the UDCs as well since in the
current implementation each of them saves the
endpoint descriptor in it's internal (and extended)
endpoint structure.

Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/usb/gadget/dbgp.c b/drivers/usb/gadget/dbgp.c
index dbe92ee8847..052209e8927 100644
--- a/drivers/usb/gadget/dbgp.c
+++ b/drivers/usb/gadget/dbgp.c
@@ -173,7 +173,9 @@ fail_1:
 
 static int __enable_ep(struct usb_ep *ep, struct usb_endpoint_descriptor *desc)
 {
-        int err = usb_ep_enable(ep, desc);
+        int err;
+        ep->desc = desc;
+        err = usb_ep_enable(ep);
         ep->driver_data = dbgp.gadget;
         return err;
 }
@@ -268,8 +270,8 @@ static int __init dbgp_configure_endpoints(struct usb_gadget *gadget)
         dbgp.serial->in = dbgp.i_ep;
         dbgp.serial->out = dbgp.o_ep;
 
-        dbgp.serial->in_desc = &i_desc;
-        dbgp.serial->out_desc = &o_desc;
+        dbgp.serial->in->desc = &i_desc;
+        dbgp.serial->out->desc = &o_desc;
 
         if (gserial_setup(gadget, 1) < 0) {
                 stp = 3;