netdev - [PATCH net 1/5] gve: Check TX QPL was actually assigned

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Message-Id: <20210517210815.3751286-2-awogbemila@google.com>
Date:   Mon, 17 May 2021 14:08:11 -0700
From:   David Awogbemila <awogbemila@...gle.com>
To:     netdev@...r.kernel.org
Cc:     Catherine Sullivan <csully@...gle.com>,
        David Awogbemila <awogbemila@...gle.com>,
        Willem de Bruijn <willemb@...gle.com>
Subject: [PATCH net 1/5] gve: Check TX QPL was actually assigned

From: Catherine Sullivan <csully@...gle.com>

Correctly check the TX QPL was assigned and unassigned if
other steps in the allocation fail.

Fixes: f5cedc84a30d (gve: Add transmit and receive support)
Signed-off-by: Catherine Sullivan <csully@...gle.com>
Signed-off-by: David Awogbemila <awogbemila@...gle.com>
Acked-by: Willem de Bruijn <willemb@...gle.com>
---
 drivers/net/ethernet/google/gve/gve_tx.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/google/gve/gve_tx.c b/drivers/net/ethernet/google/gve/gve_tx.c
index 6938f3a939d6..bb57c42872b4 100644
--- a/drivers/net/ethernet/google/gve/gve_tx.c
+++ b/drivers/net/ethernet/google/gve/gve_tx.c
@@ -212,10 +212,11 @@ static int gve_tx_alloc_ring(struct gve_priv *priv, int idx)
 	tx->dev = &priv->pdev->dev;
 	if (!tx->raw_addressing) {
 		tx->tx_fifo.qpl = gve_assign_tx_qpl(priv);
-
+		if (!tx->tx_fifo.qpl)
+			goto abort_with_desc;
 		/* map Tx FIFO */
 		if (gve_tx_fifo_init(priv, &tx->tx_fifo))
-			goto abort_with_desc;
+			goto abort_with_qpl;
 	}
 
 	tx->q_resources =
@@ -236,6 +237,9 @@ static int gve_tx_alloc_ring(struct gve_priv *priv, int idx)
 abort_with_fifo:
 	if (!tx->raw_addressing)
 		gve_tx_fifo_release(priv, &tx->tx_fifo);
+abort_with_qpl:
+	if (!tx->raw_addressing)
+		gve_unassign_qpl(priv, tx->tx_fifo.qpl->id);
 abort_with_desc:
 	dma_free_coherent(hdev, bytes, tx->desc, tx->bus);
 	tx->desc = NULL;
-- 
2.31.1.751.gd2f1c929bd-goog