From: Chris Pascoe <c.pascoe@itee.uq.edu.au>
Date: Mon, 19 Nov 2007 07:31:58 +0000 (-0300)
Subject: V4L/DVB (6633): xc2028: make register reads atomic
X-Git-Tag: v2.6.25-rc1~1235^2~340
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7d58d1117ec02f5fe22ddd03ca08fe2a8c777ea2;p=pandora-kernel.git

V4L/DVB (6633): xc2028: make register reads atomic

Issuing register reads as a separate address write and data read transactions
means that other I2C activity could occur in between and state could get out
of sync.  Issue both the write and read in a single transaction so that the
i2c layer can prevent other users accessing the bus until we are complete.

Signed-off-by: Chris Pascoe <c.pascoe@itee.uq.edu.au>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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