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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-10-24 23:53:01 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-10-25 00:12:01 -0700 |
| commit | adc4633c86f3358fce676b6c7ce75055e395123a (patch) | |
| tree | fea3da09a058986ba85e6645a594a8426c42f52d /drivers/input/input.c | |
| parent | 5161870f51acd74442375a6693c0586996d01f44 (diff) | |
Input: fix sparse warning in __input_release_device()
This fixes the following warning:
drivers/input/input.c:538:23: error: incompatible types in comparison expression (different address spaces)
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/input.c')
| -rw-r--r-- | drivers/input/input.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c index 53a0ddee7872..f1be1a77edf3 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -534,8 +534,11 @@ EXPORT_SYMBOL(input_grab_device); static void __input_release_device(struct input_handle *handle) { struct input_dev *dev = handle->dev; + struct input_handle *grabber; - if (dev->grab == handle) { + grabber = rcu_dereference_protected(dev->grab, + lockdep_is_held(&dev->mutex)); + if (grabber == handle) { rcu_assign_pointer(dev->grab, NULL); /* Make sure input_pass_event() notices that grab is gone */ synchronize_rcu(); |