[PATCH net] sfc: correctly initialise filter rwsem for farch

[Bert Kenward]

Fixes: fc7a6c287ff3 ("sfc: use a semaphore to lock farch filters too")
Suggested-by: Joseph Korty <joe.ko...@concurrent-rt.com>
Signed-off-by: Bert Kenward <bkenw...@solarflare.com>
---
 drivers/net/ethernet/sfc/farch.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/sfc/farch.c b/drivers/net/ethernet/sfc/farch.c
index 8edf20967c82..e045a5d6b938 100644
--- a/drivers/net/ethernet/sfc/farch.c
+++ b/drivers/net/ethernet/sfc/farch.c
@@ -2794,6 +2794,7 @@ int efx_farch_filter_table_probe(struct efx_nic *efx)
        if (!state)
                return -ENOMEM;
        efx->filter_state = state;
+       init_rwsem(&state->lock);
 
        table = &state->table[EFX_FARCH_FILTER_TABLE_RX_IP];
        table->id = EFX_FARCH_FILTER_TABLE_RX_IP;
-- 
2.13.6