After Kernel 3.3, brcmsmac won't work on mid-2010 Mac Mini

[Brent Roman <brent@mbari.org>]

Hi,

When I updated to Linux Kernel 3.3.5 on my mid-2010 Aluminum Unibody Mac 
Mini,
its built-in wireless was no longer recognized:

03:00.0 Network controller [0280]: Broadcom Corporation BCM43224 
802.11a/b/g/n [14e4:4353] (rev 01)
     Subsystem: Apple Computer Inc. Device [106b:0093]
     Flags: bus master, fast devsel, latency 0, IRQ 22
     Memory at d3300000 (64-bit, non-prefetchable) [size=16K]
     Capabilities: [40] Power Management version 3
     Capabilities: [58] Vendor Specific Information: Len=78 <?>
     Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+
     Capabilities: [d0] Express Endpoint, MSI 00
     Capabilities: [100] Advanced Error Reporting
     Capabilities: [13c] Virtual Channel
     Capabilities: [160] Device Serial Number 54-70-4b-ff-ff-0c-60-33
     Capabilities: [16c] Power Budgeting <?>
     Kernel driver in use: brcmsmac

I tried kernel 3.3.0 with the same negative result.
When I reverted to 3.2.16, the chip was immediately recognized.
The driver in 3.3+ is loading the bcma module.

I've fine with running 3.2.16 for now.
Is this a known problem?  A configuration error on my part?

Just let me know if you'd like me to try anything to help debug this 
(possible) regression.

- brent