Hi Alan,
I am looking at using the interface in practice. It seems to me that
pm_usage_cnt can become corrupted if usb_autopm_get_interface_async()
and usb_autopm_put_interface_async() race. Convert it to atomic_t?
Regards
Oliver
int usb_autopm_get_interface_async(struct usb_interface *intf)
{
struct usb_device *udev = interface_to_usbdev(intf);
int status = 0;
if (intf->condition == USB_INTERFACE_UNBOUND)
status = -ENODEV;
else if (udev->autoresume_disabled)
status = -EPERM;
else if (++intf->pm_usage_cnt > 0 && udev->state == USB_STATE_SUSPENDED)
^ locking needed
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