Hi Alberto,

[auto build test ERROR on usb/usb-testing]
[also build test ERROR on v4.12-rc1 next-20170515]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/Alberto-Ladron/usb-class-usblp-Fixed-assignments-inside-if-conditions/20170513-140010
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git 
usb-testing
config: x86_64-rhel (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers//usb/class/usblp.c: In function 'usblp_submit_read':
>> drivers//usb/class/usblp.c:1021:6: error: 'rv' undeclared (first use in this 
>> function)
     if (rv < 0) {
         ^~
   drivers//usb/class/usblp.c:1021:6: note: each undeclared identifier is 
reported only once for each function it appears in

vim +/rv +1021 drivers//usb/class/usblp.c

  1005          urb = usb_alloc_urb(0, GFP_KERNEL);
  1006          if (urb == NULL)
  1007                  goto raise_urb;
  1008  
  1009          usb_fill_bulk_urb(urb, usblp->dev,
  1010                  usb_rcvbulkpipe(usblp->dev,
  1011                    
usblp->protocol[usblp->current_protocol].epread->bEndpointAddress),
  1012                  usblp->readbuf, USBLP_BUF_SIZE_IN,
  1013                  usblp_bulk_read, usblp);
  1014          usb_anchor_urb(urb, &usblp->urbs);
  1015  
  1016          spin_lock_irqsave(&usblp->lock, flags);
  1017          usblp->readcount = 0; /* XXX Why here? */
  1018          usblp->rcomplete = 0;
  1019          spin_unlock_irqrestore(&usblp->lock, flags);
  1020          rc = usb_submit_urb(urb, GFP_KERNEL);
> 1021          if (rv < 0) {
  1022                  dev_dbg(&usblp->intf->dev, "error submitting urb 
(%d)\n", rc);
  1023                  spin_lock_irqsave(&usblp->lock, flags);
  1024                  usblp->rstatus = rc;
  1025                  usblp->rcomplete = 1;
  1026                  spin_unlock_irqrestore(&usblp->lock, flags);
  1027                  goto raise_submit;
  1028          }
  1029  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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