USB: EHCI: Rearrange EHCI_URB_TRACE code to avoid GCC-4.6 warnings.

With pre-release GCC-4.6, we get a 'set but not used' warning when
EHCI_URB_TRACE is not set because we set the qtd variable without
using it.

Rearrange the statements so that we only set qtd if it will be used.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index 233c288..fe99895 100644 (file)
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -1107,22 +1107,24 @@ submit_async (
        struct list_head        *qtd_list,
        gfp_t                   mem_flags
 ) {
-       struct ehci_qtd         *qtd;
        int                     epnum;
        unsigned long           flags;
        struct ehci_qh          *qh = NULL;
        int                     rc;
 
-       qtd = list_entry (qtd_list->next, struct ehci_qtd, qtd_list);
        epnum = urb->ep->desc.bEndpointAddress;
 
 #ifdef EHCI_URB_TRACE
-       ehci_dbg (ehci,
-               "%s %s urb %p ep%d%s len %d, qtd %p [qh %p]\n",
-               __func__, urb->dev->devpath, urb,
-               epnum & 0x0f, (epnum & USB_DIR_IN) ? "in" : "out",
-               urb->transfer_buffer_length,
-               qtd, urb->ep->hcpriv);
+       {
+               struct ehci_qtd *qtd;
+               qtd = list_entry(qtd_list->next, struct ehci_qtd, qtd_list);
+               ehci_dbg(ehci,
+                        "%s %s urb %p ep%d%s len %d, qtd %p [qh %p]\n",
+                        __func__, urb->dev->devpath, urb,
+                        epnum & 0x0f, (epnum & USB_DIR_IN) ? "in" : "out",
+                        urb->transfer_buffer_length,
+                        qtd, urb->ep->hcpriv);
+       }
 #endif
 
        spin_lock_irqsave (&ehci->lock, flags);