Hi Sarah,
Smatch complains that fccf4e86200b "USB: Free bandwidth when
usb_disable_device is called." introduces a dereference before a
check.
drivers/usb/core/hub.c +1639 usb_disconnect(6)
warn: variable dereferenced before check 'udev'
1633 void usb_disconnect(struct usb_device **pdev)
1634 {
1635 struct usb_device *udev = *pdev;
1636 int i;
1637 struct usb_hcd *hcd = bus_to_hcd(udev->bus);
^^^^^^^^^
dereference.
1638
1639 if (!udev) {
^^^^^
check.
I don't know the code well enough to say whether it's the
dereference or the check which should be changed.
regards,
dan carpenter
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