Hi Richard,

FYI, there are new smatch warnings show up in

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-next
head:   799ee9243d892ad959c8e5f4549593ece59f1c80
commit: 8c4fc031954b4eb72daf13d3c907a985a3eee208 [141/145] USB: chipidea: add vbus detect for udc

All smatch warnings:

+ drivers/usb/chipidea/udc.c:1683 udc_irq() warn: bitwise AND condition is false here

vim +1683 drivers/usb/chipidea/udc.c
  1673				}
  1674			}
  1675			retval = IRQ_HANDLED;
  1676		} else {
  1677			retval = IRQ_NONE;
  1678		}
  1679	
  1680		intr = hw_read(ci, OP_OTGSC, ~0);
  1681		hw_write(ci, OP_OTGSC, ~0, intr);
  1682	
> 1683		if (intr & (OTGSC_AVVIE & OTGSC_AVVIS))
  1684			queue_work(ci->wq, &ci->vbus_work);
  1685	
  1686		spin_unlock(&ci->lock);
  1687	
  1688		return retval;
  1689	}
  1690	
  1691	/**
  1692	 * udc_release: driver release function
  1693	 * @dev: device

---
0-DAY kernel build testing backend         Open Source Technology Centre
Fengguang Wu <wfg@linux.intel.com>                     Intel Corporation