dmaengine: idxd: set descriptor allocation size to threshold for swq

Since submission is sent to limited portal, the actual wq size for shared
wq is set by the threshold rather than the wq size. When the wq type is
shared, set the allocated descriptors to the threshold.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/162827151733.3459223.3829837172226042408.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c
index 21f0d73..e093cf2 100644 (file)
--- a/drivers/dma/idxd/device.c
+++ b/drivers/dma/idxd/device.c
@@ -141,8 +141,8 @@ int idxd_wq_alloc_resources(struct idxd_wq *wq)
        if (wq->type != IDXD_WQT_KERNEL)
                return 0;
 
-       wq->num_descs = wq->size;
-       num_descs = wq->size;
+       num_descs = wq_dedicated(wq) ? wq->size : wq->threshold;
+       wq->num_descs = num_descs;
 
        rc = alloc_hw_descs(wq, num_descs);
        if (rc < 0)