More than month ago I download 14.12 to driver and autoinstall was broken by compiling error. As it turned out, the problem has been in the file common/lib/modules/fglrx/build_mod/kcl_acpi.c at 845 line.
A flag no_hotplug of struct acpi_device_flags was removed at kernel 3.17.0, imho, correct resolving of it was patching a driver like this:
# if LINUX_VERSION_CODE < KERNEL_VERSION(3,17,0) tdev->flags.no_hotplug = true; # else tdev->flags.removable = 0; tdev->flags.ejectable = 0; # endif
Well, it would be great if somebody confirm and fix this bug.
I'm using Fedora 21 and last kernel I remember was 3.18.x or later version.