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

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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

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