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| author |   viresh kumar <viresh.kumar@linaro.org> | 2016-07-05 19:57:06 -0700 |
|---|---|---|
| committer |   Wolfram Sang <wsa@the-dreams.de> | 2016-07-08 10:29:31 +0900 |
| commit | 5136ed4fcb05cd4981cc6034a11e66370ed84789 (patch) | |
| tree | 79a21ebef1c71bc51f32908141ac53155b90891c /drivers/i2c/i2c-dev.c | |
| parent | i2c: designware-pci: clarify a comment for Merrifield (diff) | |
| download | linux-dev-5136ed4fcb05cd4981cc6034a11e66370ed84789.tar.xz linux-dev-5136ed4fcb05cd4981cc6034a11e66370ed84789.zip | |
i2c-dev: don't get i2c adapter via i2c_dev
There is no code protecting i2c_dev to be freed after it is returned
from i2c_dev_get_by_minor() and using it to access the value which we
already have (minor) isn't safe really.
Avoid using it and get the adapter directly from 'minor'.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Tested-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/i2c-dev.c')
| -rw-r--r-- | drivers/i2c/i2c-dev.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c index 6ecfd76270f2..66f323fd3982 100644 --- a/drivers/i2c/i2c-dev.c +++ b/drivers/i2c/i2c-dev.c @@ -485,13 +485,8 @@ static int i2cdev_open(struct inode *inode, struct file *file) unsigned int minor = iminor(inode); struct i2c_client *client; struct i2c_adapter *adap; - struct i2c_dev *i2c_dev; - - i2c_dev = i2c_dev_get_by_minor(minor); - if (!i2c_dev) - return -ENODEV; - adap = i2c_get_adapter(i2c_dev->adap->nr); + adap = i2c_get_adapter(minor); if (!adap) return -ENODEV; |