K 10
svn:author
V 4
avos
K 8
svn:date
V 27
2015-12-03T14:38:55.499581Z
K 7
svn:log
V 502
urtwn(4): add error handling for urtwn_write_X() functions.

- Call ieee80211_stop() when urtwn_init() fails
(i.e., stop vap explicitly)
- Return an error when urtwn_write_<smth>() fails.
- Handle errors from them in:
 * urtwn_fw_cmd();
 * urtwn_llt_write();
 * urtwn_efuse_*();
 * urtwn_*_power_on();
 * urtwn_*_dma_init();
 * urtwn_mac_init();
 * urtwn_init();

Tested with RTL8188EU, STA mode

Reviewed by:	kevlo
Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D4291

END