From: Jiri Kosina <jikos@jikos.cz>
Date: Sun, 10 Dec 2006 20:21:30 +0000 (+0100)
Subject: i2c: Add support for nested i2c bus locking
X-Git-Tag: v2.6.20-rc1~146^2~2^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6ea23039cb1cc7c379eb5fba0ed2c53291e9bea7;p=pandora-kernel.git

i2c: Add support for nested i2c bus locking

This patch adds the 'level' field into the i2c_adapter structure, which is
used to represent the 'logical' level of nesting for the purposes of
lockdep. This field is then used in the i2c_transfer() function, to
acquire the per-adapter bus_lock with correct nesting level.

Signed-off-by: Jiri Kosina <jikos@jikos.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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