From: Maxime Chevallier maxime.chevallier@bootlin.com
[ Upstream commit 1e27a628e3f444f53ab8099dfb31c5156e38d112 ]
The PPv2 driver defines 2 "queue_modes" : - QDIST_SINGLE_MODE, where each port share one rx queue vector between all CPUs - QDIST_MULTI_MODE, where each port has one rx queue vector per CPU.
Multi queue mode isn't available on PPv2.1, make sure we fallback to single mode when running on this revision.
Signed-off-by: Maxime Chevallier maxime.chevallier@bootlin.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c index 0319ed9ef8b8..f7f08e3fa761 100644 --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c @@ -5011,6 +5011,12 @@ static int mvpp2_probe(struct platform_device *pdev) (unsigned long)of_device_get_match_data(&pdev->dev); }
+ /* multi queue mode isn't supported on PPV2.1, fallback to single + * mode + */ + if (priv->hw_version == MVPP21) + queue_mode = MVPP2_QDIST_SINGLE_MODE; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(base))