On Friday, August 24, 2012 5:04 PM
Andrew Morton [off-list ref]

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On Tue, 21 Aug 2012 10:23:55 -0400
Alexandre Bounine [off-list ref] wrote:
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quoted

Modify RIO enumeration to apply RX/TX enable operations only to
active switch ports. This will leave inactive ports in condition consist=

ent

quoted

with their state.

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It's unclear (to me) what the effects of this are.  Does it fix some
user-visible malfunction?  Or is it just some nice-to-have thing?  Or
what?
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This patch was intended to keep inactive switch ports with inbound and
outbound packet transfers disabled to block unexpected packets during
hot insertion event. While it does not fix any visible malfunction it
was intended to prevent such events in future.  =20

Since this patch was published it was brought to my attention that some
existing switches may require inbound and outbound ports enabled for
inactive ports as well (not spec compliant).
Therefore, please remove this patch from your tree.    =20

quoted

This patch is applicable to kernel versions starting from v2.6.35.

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Is that a recommendation that such a backport be performed?  If so,
please provide the reasoning.