From: Brandon Philips <brandon@ifup.org>
Date: Wed, 2 Apr 2008 21:10:59 +0000 (-0300)
Subject: V4L/DVB (7492): vivi: Simplify the vivi driver and avoid deadlocks
X-Git-Tag: v2.6.26-rc1~1084^2~212
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=78718e5d44cd450431d5b16ee36d3a7de1db6dfa;p=pandora-kernel.git

V4L/DVB (7492): vivi: Simplify the vivi driver and avoid deadlocks

vivi previously had a very complex queuing system and held spinlocks while
doing copy_to_user, kmalloc, etc.  This caused the driver to easily deadlock
when a multi-threaded application used it and revealed bugs in videobuf too.

This replaces the copy_to_user with memcpy since we were never copying to user
space addresses.  And makes the kmalloc atomic.

Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---

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