SMB_EBUSERR
smbus_intr(sc->smbus, sc->devaddr, 0, 0, SMB_EBUSERR);
error = SMB_EBUSERR;
else if (smb_error & (SMB_EABORT | SMB_EBUSERR | SMB_ECOLLI))
error |= SMB_EBUSERR;
error |= SMB_EBUSERR;
error = SMB_EBUSERR;
error |= SMB_EBUSERR;