I thought I would comment here as I had the exact same issue with a Macbook Pro mid 2010 with Broadcom 4322.
The problem is the wl
module is not loaded, and is not available in the repos. Note that this workaround is completely at your own risk, but worked for me.
Steps:
Create the folder for the module:
$ sudo mkdir -p /lib/modules/4.0.4-303.fc22.x86_64/extra/wl
Next, copy the old wl.ko
to the new location
$ sudo cp /lib/modules/4.0.4-301.fc22.x86_64/extra/wl/wl.ko /lib/modules/4.0.4-303.fc22.x86_64/extra/wl
Finally, replace the version numbers in the new file with the correct version numbers:
$ sudo sed -i 's/-301/-303/g' /lib/modules/4.0.4-303.fc22.x86_64/extra/wl/wl.ko
Now, run depmod
so your system willl find the module:
$ sudo depmod -a
Finally, run modprobe wl
to get wifi again.
$ sudo modprobe wl
Hope that helps! Note this might break something. But it at least fixed my wifi.