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net: stmmac: Restore DT backwards-compatibility 

Recent changes to support multiple queues in the device tree bindings
resulted in the number of RX and TX queues to be initialized to zero for
device trees not adhering to the new bindings.

Restore backwards-compatibility with those device trees by falling back
to a single RX and TX queues each.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-By: Joao Pinto <jpinto@synopsys.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thierry Reding 2017-03-21 16:12:10 +01:00 committed by David S. Miller
parent f39768744f
commit 33e85b8dd6
1 changed files with 7 additions and 0 deletions
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7
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
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@ -143,6 +143,13 @@ static void stmmac_mtl_setup(struct platform_device *pdev,
struct device_node *tx_node;
u8 queue = 0;
/* For backwards-compatibility with device trees that don't have any
* snps,mtl-rx-config or snps,mtl-tx-config properties, we fall back
* to one RX and TX queues each.
*/
plat->rx_queues_to_use = 1;
plat->tx_queues_to_use = 1;
rx_node = of_parse_phandle(pdev->dev.of_node, "snps,mtl-rx-config", 0);
if (!rx_node)
return;