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| author | Somnath Kotur <[email protected]> | 2017-08-31 03:57:33 +0000 |
|---|---|---|
| committer | Doug Ledford <[email protected]> | 2017-09-22 17:57:33 +0000 |
| commit | 74828b128115033ff25d4140d732a05a36eaeaf0 (patch) | |
| tree | 42e7744de7c5bfb584cee46d2078214c5c264cdd /drivers/fpga/altera-fpga2sdram.c | |
| parent | bnxt_re: Fix race between the netdev register and unregister events (diff) | |
| download | kernel-74828b128115033ff25d4140d732a05a36eaeaf0.tar.gz kernel-74828b128115033ff25d4140d732a05a36eaeaf0.zip | |
bnxt_re: Remove RTNL lock dependency in bnxt_re_query_port
When there is a NETDEV_UNREGISTER event, bnxt_re driver calls
ib_unregister_device() (RTNL lock held).
ib_unregister_device attempts to flush a worker queue scheduled by
ib_core and that queue might have a pending ib_query_port().
ib_query_port in turn calls bnxt_re_query_port(), which while querying the
link speed using ib_get_eth_speed(), tries to acquire the rtnl_lock() which
was already held by NETDEV_UNREGISTER.
Fixing the issue by removing the link speed query from bnxt_re_query_port()
Now the speed is queried post a successful ib_register_device or whenever
there is a NETDEV_CHANGE event.
Signed-off-by: Somnath Kotur <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>
Diffstat (limited to 'drivers/fpga/altera-fpga2sdram.c')
0 files changed, 0 insertions, 0 deletions