diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/sdma.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/sdma.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/hfi1/sdma.c b/drivers/infiniband/hw/hfi1/sdma.c index 248be21acdbe..e4d5c33baece 100644 --- a/drivers/infiniband/hw/hfi1/sdma.c +++ b/drivers/infiniband/hw/hfi1/sdma.c @@ -1329,11 +1329,13 @@ void sdma_clean(struct hfi1_devdata *dd, size_t num_engines) kvfree(sde->tx_ring); sde->tx_ring = NULL; } - spin_lock_irq(&dd->sde_map_lock); - sdma_map_free(rcu_access_pointer(dd->sdma_map)); - RCU_INIT_POINTER(dd->sdma_map, NULL); - spin_unlock_irq(&dd->sde_map_lock); - synchronize_rcu(); + if (rcu_access_pointer(dd->sdma_map)) { + spin_lock_irq(&dd->sde_map_lock); + sdma_map_free(rcu_access_pointer(dd->sdma_map)); + RCU_INIT_POINTER(dd->sdma_map, NULL); + spin_unlock_irq(&dd->sde_map_lock); + synchronize_rcu(); + } kfree(dd->per_sdma); dd->per_sdma = NULL; @@ -3201,7 +3203,6 @@ int _pad_sdma_tx_descs(struct hfi1_devdata *dd, struct sdma_txreq *tx) { int rval = 0; - tx->num_desc++; if ((unlikely(tx->num_desc == tx->desc_limit))) { rval = _extend_sdma_tx_descs(dd, tx); if (rval) { @@ -3215,6 +3216,7 @@ int _pad_sdma_tx_descs(struct hfi1_devdata *dd, struct sdma_txreq *tx) SDMA_MAP_NONE, dd->sdma_pad_phys, sizeof(u32) - (tx->packet_len & (sizeof(u32) - 1))); + tx->num_desc++; _sdma_close_tx(dd, tx); return rval; } |