diff options
Diffstat (limited to 'drivers/infiniband/hw')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/sdma.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/sdma.c b/drivers/infiniband/hw/hfi1/sdma.c index 70828de7436b..28b66bd70b74 100644 --- a/drivers/infiniband/hw/hfi1/sdma.c +++ b/drivers/infiniband/hw/hfi1/sdma.c @@ -405,6 +405,7 @@ static void sdma_flush(struct sdma_engine *sde) struct sdma_txreq *txp, *txp_next; LIST_HEAD(flushlist); unsigned long flags; + uint seq; /* flush from head to tail */ sdma_flush_descq(sde); @@ -415,6 +416,22 @@ static void sdma_flush(struct sdma_engine *sde) /* flush from flush list */ list_for_each_entry_safe(txp, txp_next, &flushlist, list) complete_tx(sde, txp, SDMA_TXREQ_S_ABORTED); + /* wakeup QPs orphaned on the dmawait list */ + do { + struct iowait *w, *nw; + + seq = read_seqbegin(&sde->waitlock); + if (!list_empty(&sde->dmawait)) { + write_seqlock(&sde->waitlock); + list_for_each_entry_safe(w, nw, &sde->dmawait, list) { + if (w->wakeup) { + w->wakeup(w, SDMA_AVAIL_REASON); + list_del_init(&w->list); + } + } + write_sequnlock(&sde->waitlock); + } + } while (read_seqretry(&sde->waitlock, seq)); } /* |