heads-up! ATH9K_RATE_CONTROL config change

[Kamal Mostafa]

Consumers of the linux-3.8.y and linux-3.5.y extended stable branches
should take note of this patch, which is queued up for inclusion in
3.8.13.3 and 3.5.7.15:

    ath9k: Use minstrel rate control by default

    commit 5efac94999ff218e0101f67a059e44abb4b0b523 upstream.

Its purpose is to make ath9k to use a different rate control algorithm,
as the current default ath9k algorithm has been deemed too problematic.

This change is implemented by the removal of the config option
  ATH9K_RATE_CONTROL  (default=y)

and the introduction of a new config option
  ATH9K_LEGACY_RATE_CONTROL  (default=n)


Take note!  Do not set ATH9K_LEGACY_RATE_CONTROL=y just because your old
config had ATH9K_RATE_CONTROL=y.  Most consumers of 3.5.y and 3.8.y
should probably accept the default ATH9K_LEGACY_RATE_CONTROL=n so as to
keep consistent with mainline and the stable lines.


More discussion about this:
http://thread.gmane.org/gmane.linux.kernel.stable/55302
http://thread.gmane.org/gmane.linux.kernel.stable/55315

 -Kamal

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