diff options
| author | Olof Johansson <olof@lixom.net> | 2014-04-12 00:19:41 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2014-05-14 18:14:43 +0200 |
| commit | ce78cc071f5f541480e381cc0241d37590041a9d (patch) | |
| tree | 44a7a967d6a0b2220b320e29f98bcba59b908fbc /drivers | |
| parent | i2c: nomadik: Don't use IS_ERR for devm_ioremap (diff) | |
| download | linux-ce78cc071f5f541480e381cc0241d37590041a9d.tar.xz linux-ce78cc071f5f541480e381cc0241d37590041a9d.zip | |
i2c: s3c2410: resume race fix
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>
Cc: stable@kernel.org
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 ae4491062e41..bb3a9964f7e0 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -1276,10 +1276,10 @@ 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_prepare_enable(i2c->clk); s3c24xx_i2c_init(i2c); clk_disable_unprepare(i2c->clk); + i2c->suspended = 0; return 0; } |