diff options
Diffstat (limited to 'drivers/dma/idxd/submit.c')
| -rw-r--r-- | drivers/dma/idxd/submit.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/dma/idxd/submit.c b/drivers/dma/idxd/submit.c index dfc8900d5de3..02f9f51e29a6 100644 --- a/drivers/dma/idxd/submit.c +++ b/drivers/dma/idxd/submit.c @@ -86,6 +86,9 @@ int idxd_submit_desc(struct idxd_wq *wq, struct idxd_desc *desc) if (idxd->state != IDXD_DEV_ENABLED) return -EIO; + if (!percpu_ref_tryget_live(&wq->wq_active)) + return -ENXIO; + portal = wq->portal; /* @@ -108,6 +111,8 @@ int idxd_submit_desc(struct idxd_wq *wq, struct idxd_desc *desc) return rc; } + percpu_ref_put(&wq->wq_active); + /* * Pending the descriptor to the lockless list for the irq_entry * that we designated the descriptor to. |