netdev - [PATCH v2 net-next] idpf: use desc_ring when checking completion queue DMA allocation

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Message-ID: <20251118105942.3163598-1-alok.a.tiwari@oracle.com>
Date: Tue, 18 Nov 2025 02:55:21 -0800
From: Alok Tiwari <alok.a.tiwari@...cle.com>
To: przemyslaw.kitszel@...el.com, aleksander.lobakin@...el.com,
        anthony.l.nguyen@...el.com, andrew+netdev@...n.ch, kuba@...nel.org,
        davem@...emloft.net, edumazet@...gle.com, pabeni@...hat.com,
        intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org
Cc: alok.a.tiwarilinux@...il.com, alok.a.tiwari@...cle.com
Subject: [PATCH v2 net-next] idpf: use desc_ring when checking completion queue DMA allocation

idpf_compl_queue uses a union for comp, comp_4b, and desc_ring. The
release path should check complq->desc_ring to determine whether the DMA
descriptor ring is allocated. The current check against comp is not
incorrect, but it appears to be leftover code from a previous commit.

Switching the check to desc_ring improves readability and more directly
reflects the intended meaning, since desc_ring is the field representing
the allocated DMA-backed descriptor ring.

Signed-off-by: Alok Tiwari <alok.a.tiwari@...cle.com>
---
v1 -> v2
modify commit message and target to net-next
---
 drivers/net/ethernet/intel/idpf/idpf_txrx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.c b/drivers/net/ethernet/intel/idpf/idpf_txrx.c
index 828f7c444d30..1e7ae6f969ac 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_txrx.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.c
@@ -134,7 +134,7 @@ static void idpf_compl_desc_rel(struct idpf_compl_queue *complq)
 {
 	idpf_xsk_clear_queue(complq, VIRTCHNL2_QUEUE_TYPE_TX_COMPLETION);
 
-	if (!complq->comp)
+	if (!complq->desc_ring)
 		return;
 
 	dma_free_coherent(complq->netdev->dev.parent, complq->size,
-- 
2.50.1