From: Ioana Ciornei ioana.ciornei@nxp.com
[ Upstream commit 0e5ad75b02d9341eb9ca22627247f9a02cc20d6f ]
We should keep retrying to acquire buffers through the software portals as long as the function returns -EBUSY and the number of retries is __below__ DPAA2_ETH_SWP_BUSY_RETRIES.
Fixes: ef17bd7cc0c8 ("dpaa2-eth: Avoid unbounded while loops") Signed-off-by: Ioana Ciornei ioana.ciornei@nxp.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c index b7031f8562e04..665ec7269c603 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c @@ -1054,7 +1054,7 @@ static void drain_bufs(struct dpaa2_eth_priv *priv, int count) buf_array, count); if (ret < 0) { if (ret == -EBUSY && - retries++ >= DPAA2_ETH_SWP_BUSY_RETRIES) + retries++ < DPAA2_ETH_SWP_BUSY_RETRIES) continue; netdev_err(priv->net_dev, "dpaa2_io_service_acquire() failed\n"); return;