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@djia... 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 --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