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Can you install atheros ath9k driver from 3.2 kernel into 3.5 kernel?

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http://askubuntu.com – Running Ubuntu 12.04 on an Acer Aspire 5750Z with an Intel Pentium I upgraded the kernel from 3.2.0-35 to 3.5.0-21 to fix a problem with power management (It would freeze my system when I booted from battery and whenever I unplugged the AC adapter) and it worked just fine. But.. I started experiencing all sorts of network problems (slow, dropped connections, froze when turning off wifi, etc..) I tried some other kernel changes but all came with the power management problem. My wifi works perfect in the 3.2 kernel So, is it possible to install the 3.2 kernel ath9k driver into the newer ke (HowTos)