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Fri, 12 Sep 2025 07:01:45 -0700 (PDT) From: Feng zhou To: axboe@kernel.dk, asml.silence@gmail.com, almasrymina@google.com, kuba@kernel.org, edumazet@google.com, pabeni@redhat.com, horms@kernel.org, saeedm@nvidia.com, tariqt@nvidia.co, mbloch@nvidia.com, leon@kernel.org, andrew+netdev@lunn.ch, dtatulea@nvidia.com Cc: netdev@vger.kernel.org, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, yangzhenze@bytedance.com, wangdongdong.6@bytedance.com, zhoufeng.zf@bytedance.com Subject: [PATCH net-next] io_uring/zcrx: fix ifq->if_rxq is -1, get dma_dev is NULL Date: Fri, 12 Sep 2025 22:01:33 +0800 Message-Id: <20250912140133.97741-1-zhoufeng.zf@bytedance.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Feng Zhou ifq->if_rxq has not been assigned, is -1, the correct value is in reg.if_rxq. Fixes: 59b8b32ac8d469958936fcea781c7f58e3d64742 ("io_uring/zcrx: add support for custom DMA devices") Signed-off-by: Feng Zhou --- 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 319eddfd30e0..3639283c87ca 100644 --- a/io_uring/zcrx.c +++ b/io_uring/zcrx.c @@ -600,7 +600,7 @@ int io_register_zcrx_ifq(struct io_ring_ctx *ctx, goto err; } - ifq->dev = netdev_queue_get_dma_dev(ifq->netdev, ifq->if_rxq); + ifq->dev = netdev_queue_get_dma_dev(ifq->netdev, reg.if_rxq); if (!ifq->dev) { ret = -EOPNOTSUPP; goto err; -- 2.30.2