diff options
| author | Olof Johansson <olof@lixom.net> | 2014-04-11 15:19:41 -0700 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-06-09 13:29:12 +0100 |
| commit | 5b8d65ccb6e96f5fa066c018d9ef365fd3c8da9b (patch) | |
| tree | 5deae734774ad3894364d0a44129f40443033080 /drivers | |
| parent | ecf55212ba6a7d71db5246977431fc28a7850df3 (diff) | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/busses/i2c-s3c2410.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index 4c1718081685..7d6d2b76b92e 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -1082,10 +1082,10 @@ static int s3c24xx_i2c_resume(struct device *dev) struct platform_device *pdev = to_platform_device(dev); struct s3c24xx_i2c *i2c = platform_get_drvdata(pdev); - i2c->suspended = 0; clk_enable(i2c->clk); s3c24xx_i2c_init(i2c); clk_disable(i2c->clk); + i2c->suspended = 0; return 0; } |