linux-kernel - [RFC net-next 2/4] io_uring/zcrx: Use the new netdev_get_dma

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Message-ID: <20250702172433.1738947-3-dtatulea@nvidia.com>
Date: Wed, 2 Jul 2025 20:24:24 +0300
From: Dragos Tatulea <dtatulea@...dia.com>
To: <almasrymina@...gle.com>, <asml.silence@...il.com>, Jens Axboe
	<axboe@...nel.dk>
CC: Dragos Tatulea <dtatulea@...dia.com>, Saeed Mahameed <saeedm@...dia.com>,
	<tariqt@...dia.com>, <cratiu@...dia.com>, <io-uring@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: [RFC net-next 2/4] io_uring/zcrx: Use the new netdev_get_dma_dev() API

Using the new DMA dev helper API, there will be an early failure if the
device does not support DMA.

Signed-off-by: Dragos Tatulea <dtatulea@...dia.com>
---
 io_uring/zcrx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c
index 797247a34cb7..93462e5b2207 100644
--- a/io_uring/zcrx.c
+++ b/io_uring/zcrx.c
@@ -584,7 +584,7 @@ int io_register_zcrx_ifq(struct io_ring_ctx *ctx,
 		goto err;
 	}
 
-	ifq->dev = ifq->netdev->dev.parent;
+	ifq->dev = netdev_get_dma_dev(ifq->netdev);
 	if (!ifq->dev) {
 		ret = -EOPNOTSUPP;
 		goto err;
-- 
2.50.0