From: Michael S. Tsirkin <mst@redhat.com>
Date: Thu, 2 Apr 2015 11:05:47 +0000 (+0200)
Subject: virtio: document queue state logic
X-Git-Tag: omap-for-v4.1/fixes-rc1~141^2~71
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=60302ff631f0f3eac0ec592e128b776f0676b397;p=pandora-kernel.git

virtio: document queue state logic

commit d631b94e7a15277858ec5f88d674d93080506999
    virtio: change comment in transmit

started clarifying the logic behind queue state management,
but introduced an inaccuracy: TX_BUSY does not cause
a BUG message.

Clean this up some more, explaining the tradeoffs in detail.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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