Why does brcm_patchram_plus wait almost infinite after Done setting line discpline

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During use with the option enable_hci the program waits for almost infinite:

        if (enable_hci) {
                proc_enable_hci();

                while (1) {
                        sleep(UINT_MAX);
                }
        }

UINT_MAX is a very big value.

While ending the program with ^C after the message "Done setting line 
discpline" seem to be working fine.

Is the sleep really requered ? 

Original issue reported on code.google.com by k.eenkho...@gmail.com on 25 May 2014 at 6:51