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| author |   Stephen Warren <swarren@nvidia.com> | 2013-02-11 14:15:32 -0700 |
|---|---|---|
| committer |   Grant Likely <grant.likely@secretlab.ca> | 2013-02-13 10:05:24 +0000 |
| commit | c31a0c052205e3ec24efc3fe18ef70c3e913f2d4 (patch) | |
| tree | 0c9a9bfea6fd494caefd714fb016a863fc253adf /drivers/of/selftest.c | |
| parent | Merge branch 'for-next' from git://sources.calxeda.com/kernel/linux.git (diff) | |
| download | linux-dev-c31a0c052205e3ec24efc3fe18ef70c3e913f2d4.tar.xz linux-dev-c31a0c052205e3ec24efc3fe18ef70c3e913f2d4.zip | |
of: fix recursive locking in of_get_next_available_child()
of_get_next_available_child() acquires devtree_lock, then calls
of_device_is_available() which calls of_get_property() which calls
of_find_property() which tries to re-acquire devtree_lock, thus causing
deadlock.
To avoid this, create a new __of_device_is_available() which calls
__of_get_property() instead, which calls __of_find_property(), which
does not take the lock,. Update of_get_next_available_child() to call
the new __of_device_is_available() since it already owns the lock.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/of/selftest.c')
0 files changed, 0 insertions, 0 deletions