usb: gadget: make return of 0 explicit

Delete unnecessary local variable whose value is always 0 and that hides
the fact that the result is always 0.

A simplified version of the semantic patch that fixes this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r exists@
local idexpression ret;
expression e;
position p;
@@

-ret = 0;
... when != ret = e
return
- ret
+ 0
  ;
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2 files changed, 3 insertions, 7 deletions

diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 042c66b71df8..f80151932053 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1312,9 +1312,7 @@ static void fill_ext_compat(struct usb_configuration *c, u8 *buf)
 static int count_ext_prop(struct usb_configuration *c, int interface)
 {
         struct usb_function *f;
-        int j, res;
-
-        res = 0;
+        int j;
 
         f = c->interface[interface];
         for (j = 0; j < f->os_desc_n; ++j) {
@@ -1326,7 +1324,7 @@ static int count_ext_prop(struct usb_configuration *c, int interface)
                 if (d && d->ext_compat_id)
                         return d->ext_prop_count;
         }
-        return res;
+        return 0;
 }
 
 static int len_ext_prop(struct usb_configuration *c, int interface)
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index 8c06430dcc47..2b54955d3166 100644
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -561,7 +561,6 @@ static int dummy_disable(struct usb_ep *_ep)
         struct dummy_ep         *ep;
         struct dummy            *dum;
         unsigned long           flags;
-        int                     retval;
 
         ep = usb_ep_to_dummy_ep(_ep);
         if (!_ep || !ep->desc || _ep->name == ep0name)
@@ -571,12 +570,11 @@ static int dummy_disable(struct usb_ep *_ep)
         spin_lock_irqsave(&dum->lock, flags);
         ep->desc = NULL;
         ep->stream_en = 0;
-        retval = 0;
         nuke(dum, ep);
         spin_unlock_irqrestore(&dum->lock, flags);
 
         dev_dbg(udc_dev(dum), "disabled %s\n", _ep->name);
-        return retval;
+        return 0;
 }
 
 static struct usb_request *dummy_alloc_request(struct usb_ep *_ep,