From: Amit Shah <amit.shah@redhat.com>
Date: Mon, 21 Dec 2009 15:56:45 +0000 (+0530)
Subject: virtio: console: Prepare for writing to userspace buffers
X-Git-Tag: v2.6.34-rc1~294^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b766ceed5bbf04ae153389f5a15f53b9b6106a35;p=pandora-kernel.git

virtio: console: Prepare for writing to userspace buffers

When ports get advertised as char devices, the buffers will come from
userspace. Equip the fill_readbuf function with the ability to write
to userspace buffers.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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