Hello Richard Zhao,
The patch 8c4fc031954b: "USB: chipidea: add vbus detect for udc" from
Sep 12, 2012, leads to the following Smatch warning:
drivers/usb/chipidea/udc.c:1683 udc_irq()
warn: odd binop '0x2000000 & 0x20000'
1680 intr = hw_read(ci, OP_OTGSC, ~0);
1681 hw_write(ci, OP_OTGSC, ~0, intr);
1682
1683 if (intr & (OTGSC_AVVIE & OTGSC_AVVIS))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This is never true. I think it should either be:
if (intr & (OTGSC_AVVIE | OTGSC_AVVIS))
or
if ((intr & OTGSC_AVVIE) && (intr & OTGSC_AVVIE))
1684 queue_work(ci->wq, &ci->vbus_work);
1685
regards,
dan carpenter
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