i2c: s3c2410: resume race fix
authorOlof Johansson <olof@lixom.net>
Fri, 11 Apr 2014 22:19:41 +0000 (15:19 -0700)
committerJiri Slaby <jslaby@suse.cz>
Mon, 9 Jun 2014 13:53:54 +0000 (15:53 +0200)
commit7fd5ba24b057b90f61bbf748863b2a0eef438d24
tree3c56edf22e0fb1be7104c7cfbbbda0f971c22f3e
parent3c90e6addbbe7bb4f92e6aada61a7b1e30f59b43
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: Jiri Slaby <jslaby@suse.cz>
drivers/i2c/busses/i2c-s3c2410.c