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| author | Matan Barak <matanb@mellanox.com> | 2015-12-30 16:14:17 +0200 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-01-19 15:26:21 -0500 |
| commit | 2e2cdace5a26507a564d319a1338920a838ef52e (patch) | |
| tree | 7cc9986a83bbb35f3ae4f60de75ac1f0013c4036 /drivers/infiniband | |
| parent | 6e2a51a0f7c89a22169f366d23d5f213b7b7edaf (diff) | |
| download | blackbird-op-linux-2e2cdace5a26507a564d319a1338920a838ef52e.tar.gz blackbird-op-linux-2e2cdace5a26507a564d319a1338920a838ef52e.zip | |
IB/core: Eliminate sparse false context imbalance warning
When write_gid function needs to do a sleep-able operation, it unlocks
table->rwlock and then relocks it. Sparse complains about context
imbalance.
This is safe as write_gid is always called with table->rwlock.
write_gid protects from simultaneous writes to this GID entry
by setting the GID_TABLE_ENTRY_INVALID flag.
Fixes: 9c584f049596 ('IB/core: Change per-entry lock in RoCE GID table to
one lock')
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/core/cache.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index 92cadbddbe49..53343ffbff7a 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -174,6 +174,7 @@ static int write_gid(struct ib_device *ib_dev, u8 port, const struct ib_gid_attr *attr, enum gid_table_write_action action, bool default_gid) + __releases(&table->rwlock) __acquires(&table->rwlock) { int ret = 0; struct net_device *old_net_dev; |
