From: Brian Foley <brian.foley@arm.com>
Date: Mon, 24 Sep 2012 13:33:41 +0000 (+0100)
Subject: virtio_mmio: fix off by one error allocating queue
X-Git-Tag: omap-for-v3.7-rc1/fixes-hwmod-clock-signed-v3~5^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3850d29fc40f3494a3e9c3aac45b6afe53526449;p=pandora-kernel.git

virtio_mmio: fix off by one error allocating queue

vm_setup_vq fails to allow VirtQueues needing only 2 pages of
storage, as it should. Found with a kernel using 64kB pages, but
can be provoked if a virtio device reports QueueNumMax where the
descriptor table and available ring fit in one page, and the used
ring on the second (<= 227 descriptors with 4kB pages and <= 3640
with 64kB pages.)

Signed-off-by: Brian Foley <brian.foley@arm.com>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---

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