From: Dave Jiang Date: Fri, 15 Jan 2021 21:53:07 +0000 (-0700) Subject: dmaengine: idxd: set DMA channel to be private X-Git-Tag: v5.15~1659^2~41 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c06e424be5f5184468c5f761c0d2cf1ed0a4e0fc;p=platform%2Fkernel%2Flinux-starfive.git dmaengine: idxd: set DMA channel to be private Add DMA_PRIVATE attribute flag to idxd DMA channels. The dedicated WQs are expected to be used by a single client and not shared. While doing NTB testing this mistake was discovered, which prevented ntb_transport from requesting DSA wqs as DMA channels via dma_request_channel(). Reported-by: Srinijia Kambham Signed-off-by: Dave Jiang Tested-by: Srinijia Kambham Fixes: 8f47d1a5e545 ("dmaengine: idxd: connect idxd to dmaengine subsystem") Link: https://lore.kernel.org/r/161074758743.2184057.3388557138816350980.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul --- diff --git a/drivers/dma/idxd/dma.c b/drivers/dma/idxd/dma.c index 8ed2773..90d19d0 100644 --- a/drivers/dma/idxd/dma.c +++ b/drivers/dma/idxd/dma.c @@ -165,6 +165,7 @@ int idxd_register_dma_device(struct idxd_device *idxd) INIT_LIST_HEAD(&dma->channels); dma->dev = &idxd->pdev->dev; + dma_cap_set(DMA_PRIVATE, dma->cap_mask); dma_cap_set(DMA_COMPLETION_NO_ORDER, dma->cap_mask); dma->device_release = idxd_dma_release;