diff mbox series

[5.13,012/175] dmaengine: idxd: fix desc->vector that isnt being updated

Message ID 20210810173001.351282138@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH Aug. 10, 2021, 5:28 p.m. UTC 
From: Dave Jiang <dave.jiang@intel.com>

[ Upstream commit 8ba89a3c7967808f33478a8573277cf6a7412c4c ]

Missing update for desc->vector when the wq vector gets updated. This
causes the desc->vector to always be at 0.

Fixes: da435aedb00a ("dmaengine: idxd: fix array index when int_handles are being used")
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/162628784374.353761.4736602409627820431.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/dma/idxd/submit.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/dma/idxd/submit.c b/drivers/dma/idxd/submit.c
index e29887528077..21d7d09f73dd 100644
--- a/drivers/dma/idxd/submit.c
+++ b/drivers/dma/idxd/submit.c
@@ -25,11 +25,10 @@  static struct idxd_desc *__get_desc(struct idxd_wq *wq, int idx, int cpu)
 	 * Descriptor completion vectors are 1...N for MSIX. We will round
 	 * robin through the N vectors.
 	 */
-	wq->vec_ptr = (wq->vec_ptr % idxd->num_wq_irqs) + 1;
+	wq->vec_ptr = desc->vector = (wq->vec_ptr % idxd->num_wq_irqs) + 1;
 	if (!idxd->int_handles) {
 		desc->hw->int_handle = wq->vec_ptr;
 	} else {
-		desc->vector = wq->vec_ptr;
 		/*
 		 * int_handles are only for descriptor completion. However for device
 		 * MSIX enumeration, vec 0 is used for misc interrupts. Therefore even