a3c0e7f2fb
* iwm_poll_bit() returns 1 on success and 0 on failure, whereas iwl_poll_bit() in Linux's iwlwifi returns >= 0 on success and < 0 on failure. * Because of the wrong iwm_poll_bit return code check, no warning was printed if tx DMA stopping failed. Approved by: adrian (mentor) Differential Revision: https://reviews.freebsd.org/D7371