USBFS_CAP_ZERO_PACKET 1291 third_party/libusb/src/libusb/os/linux_usbfs.c 			hpriv->caps |= USBFS_CAP_ZERO_PACKET;
USBFS_CAP_ZERO_PACKET 1709 third_party/libusb/src/libusb/os/linux_usbfs.c 			!(dpriv->caps & USBFS_CAP_ZERO_PACKET))