diff options
| author | Vinicius Costa Gomes <vinicius.gomes@intel.com> | 2026-01-21 21:34:32 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2026-02-25 14:09:18 +0300 |
| commit | 4fd3c4679f4f33873d7cb90b3eb553bea4db1038 (patch) | |
| tree | c5882c5f4d4d8b63ca6e11c20139f023184c3c71 | |
| parent | 2a93f5747d0eef89a3158c91d185d37d0bca2491 (diff) | |
| download | linux-4fd3c4679f4f33873d7cb90b3eb553bea4db1038.tar.xz | |
dmaengine: idxd: Wait for submitted operations on .device_synchronize()
When the dmaengine "core" asks the driver to synchronize, send a Drain
operation to the device workqueue, which will wait for the already
submitted operations to finish.
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Link: https://patch.msgid.link/20260121-idxd-fix-flr-on-kernel-queues-v3-v3-6-7ed70658a9d1@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/dma/idxd/dma.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/dma/idxd/dma.c b/drivers/dma/idxd/dma.c index e4f9788aa635..9937b671f637 100644 --- a/drivers/dma/idxd/dma.c +++ b/drivers/dma/idxd/dma.c @@ -203,6 +203,13 @@ static int idxd_dma_terminate_all(struct dma_chan *c) return 0; } +static void idxd_dma_synchronize(struct dma_chan *c) +{ + struct idxd_wq *wq = to_idxd_wq(c); + + idxd_wq_drain(wq); +} + int idxd_register_dma_device(struct idxd_device *idxd) { struct idxd_dma_dev *idxd_dma; @@ -234,6 +241,7 @@ int idxd_register_dma_device(struct idxd_device *idxd) dma->device_alloc_chan_resources = idxd_dma_alloc_chan_resources; dma->device_free_chan_resources = idxd_dma_free_chan_resources; dma->device_terminate_all = idxd_dma_terminate_all; + dma->device_synchronize = idxd_dma_synchronize; rc = dma_async_device_register(dma); if (rc < 0) { |