[PATCH 2/3] net: stmmac: Always use the number of configured TX queues

[Thierry Reding]

From: Thierry Reding <tred...@nvidia.com>

Even if hardware supports multiple queues, software can choose to only
use a subset of them. Make sure we never try to access uninitialized
queues.

Signed-off-by: Thierry Reding <tred...@nvidia.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c 
b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 106ace3781b3..ec5bba85c529 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3423,7 +3423,7 @@ static int stmmac_poll(struct napi_struct *napi, int 
budget)
        struct stmmac_rx_queue *rx_q =
                container_of(napi, struct stmmac_rx_queue, napi);
        struct stmmac_priv *priv = rx_q->priv_data;
-       u32 tx_count = priv->dma_cap.number_tx_queues;
+       u32 tx_count = priv->plat->tx_queues_to_use;
        u32 chan = rx_q->queue_index;
        u32 work_done = 0;
        u32 queue = 0;
-- 
2.12.0