调试android P2P无法正常运行

当调试android系统p2p时，发现系统wifi直连扫描不出wifi，可以查看内核，先查看是否p2p interface 有创建，

Line 851: [   17.894313] Driver: 1.579.77.41.11 (r)\x0a  Firmware: wl0: Oct  8 2016 15:31:47 version 7.46.57.4.ap.r4 (A1 Station/P2P) FWID 01-3621395e es6.c5.n4.a3\x0a  CLM: 7.11.15
	Line 884: [   18.297916] P2P interface registered
	Line 885: [   18.297933] wl_cfgp2p_add_p2p_disc_if: wdev: ffffffc012036200, wdev->net:           (null)
	Line 885: [   18.297933] wl_cfgp2p_add_p2p_disc_if: wdev: ffffffc012036200, wdev->net:           (null)
	Line 887: [   18.354207] P2P interface started
	Line 999: [   24.365778] CFG80211-ERROR) wl_cfgp2p_down : Clean up the p2p discovery IF
	Line 999: [   24.365778] CFG80211-ERROR) wl_cfgp2p_down : Clean up the p2p discovery IF
	Line 1000: [   24.365793] wl_cfgp2p_del_p2p_disc_if: wdev: ffffffc012036200, wdev->net:           (null)
	Line 1000: [   24.365793] wl_cfgp2p_del_p2p_disc_if: wdev: ffffffc012036200, wdev->net:           (null)
	Line 1001: [   24.367585] CFGP2P-ERROR) wl_cfgp2p_disable_discovery :  do nothing, not initialized
	Line 1001: [   24.367585] CFGP2P-ERROR) wl_cfgp2p_disable_discovery :  do nothing, not initialized
	Line 1002: [   24.367598] Exit. P2P interface stopped
	Line 1003: [   24.397617] P2P interface unregistered
	Line 1004: [   24.397641] CFGP2P-ERROR) wl_cfgp2p_deinit_priv : In
	Line 1004: [   24.397641] CFGP2P-ERROR) wl_cfgp2p_deinit_priv : In
	Line 1092: [   26.312738] Driver: 1.579.77.41.11 (r)\x0a  Firmware: wl0: Oct  8 2016 15:31:47 version 7.46.57.4.ap.r4 (A1 Station/P2P) FWID 01-3621395e es6.c5.n4.a3\x0a  CLM: 7.11.15
	Line 1265: [  465.667659] CFGP2P-ERROR) wl_cfgp2p_disable_discovery :  do nothing, not initialized
	Line 1265: [  465.667659] CFGP2P-ERROR) wl_cfgp2p_disable_discovery :  do nothing, not initialized
	Line 1266: [  465.667699] CFGP2P-ERROR) wl_cfgp2p_deinit_priv : In
	Line 1266: [  465.667699] CFGP2P-ERROR) wl_cfgp2p_deinit_priv : In
	Line 1496: [  469.293586] Driver: 1.579.77.41.11 (r)\x0a  Firmware: wl0: Oct  8 2016 15:31:47 version 7.46.57.4.ap.r4 (A1 Station/P2P) FWID 01-3621395e es6.c5.n4.a3\x0a  CLM: 7.11.15
	Line 1524: [  469.577664] P2P interface registered

如果没有相关p2p接口创建，可以查看/vendor/etc/wifi/p2p_supplicant_overlay.conf，把no_ctrl_interface= 这段代码删除，即可强制创建p2p节点。