SRU Justification:

Impact: b43kegacy can crash or lock during initialization.

Fix Description: One oops fix plus 2 important upstream maintenance
patches suggested by Larry Finger (the b43legacy maintainer).

1) Upon driver load when a BCM4304 rev 2 card is present, the kernel
undergoes a hard crash with power off the only recovery. This crash is
due to a missing check for NULL pointers, which only occur for a limited
set os devices.

2) In the current code, the presence of improper LED encoding in the
SPROM generates a kernel bug message. As a number of older cards have
faulty encoding, these conditions are now silently accepted.

3) Initialize 802.11b correctly.

Patch: See previous 3 attachments

TEST CASE: b43legacy locks on init, or cannot connect using 802.11b.

-- 
Loading b43legacy freezes computer
https://bugs.launchpad.net/bugs/192720
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