i2c: s3c2410: resume race fix
authorOlof Johansson <olof@lixom.net>
Fri, 11 Apr 2014 22:19:41 +0000 (15:19 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 7 Jun 2014 20:25:39 +0000 (13:25 -0700)
commita0d3102153fc5d9cf8bb49b62ac9655f9f63b493
tree82caac34ce86c892959e005ba9aefcc20ec2a2ac
parenta6b6cde1481125b886f726756a3364be0fb9f93e
i2c: s3c2410: resume race fix

commit ce78cc071f5f541480e381cc0241d37590041a9d upstream.

Don't unmark the device as suspended until after it's been re-setup.

The main race would be w.r.t. an i2c driver that gets resumed at the same
time (asyncronously), that is allowed to do a transfer since suspended
is set to 0 before reinit, but really should have seen the -EIO return
instead.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/i2c/busses/i2c-s3c2410.c