i2c: s3c2410: resume race fix
authorOlof Johansson <olof@lixom.net>
Fri, 11 Apr 2014 22:19:41 +0000 (15:19 -0700)
committerBen Hutchings <ben@decadent.org.uk>
Mon, 9 Jun 2014 12:29:12 +0000 (13:29 +0100)
commit5b8d65ccb6e96f5fa066c018d9ef365fd3c8da9b
tree5deae734774ad3894364d0a44129f40443033080
parentecf55212ba6a7d71db5246977431fc28a7850df3
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>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
drivers/i2c/busses/i2c-s3c2410.c