How to restart NetworkManager and wifi in fedora 24?

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I think there is a problem in wifi driver and firefox my fedora 24 .(Acer Aspire E5 , intel i3 ,)

Sometime after booting firefox tends to freeze and wifi connection is gone out. Though I get out the situation using

Alt+tab to switch into another window.

I thought systemctl restart NetworkManager will work . But it did not . I had to reboot again. This link may be helpful. Whenever I try this , this does not help.

[ppaul@pi ~]$ iwconfig
lo        no wireless extensions.

wlp2s0    IEEE 802.11bgn  ESSID:"WANN(D)"


      Mode:Managed  Frequency:2.447 GHz  Access Point: **:**:**:**:**:**   
      Bit Rate=54 Mb/s   Tx-Power=16 dBm   
      Retry short limit:7   RTS thr:off   Fragment thr:off
      Power Management:off
      Link Quality=39/70  Signal level=-71 dBm  
      Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
      Tx excessive retries:19  Invalid misc:2714   Missed beacon:0
enp1s0f1  no wireless extensions.

[ppaul@pi ~]$ ifconfig wlp2s0 up

SIOCSIFFLAGS: Operation not permitted

It is showing. I can't identify what is happening . It is very annoying bug , I have to restart again and again. Can anyone suggest what to do?

for convenience following is supplied .

[ppaul@pi ~]$ lspci | grep -i wireless
02:00.0 Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01)