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dpaa2-eth: retry the probe when the MAC is not yet discovered on the bus

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[ Upstream commit 47325da28ef137fa04a0e5d6d244e9635184bf5e ]

The fsl_mc_get_endpoint() function now returns -EPROBE_DEFER when the
dpmac device was not yet discovered by the fsl-mc bus. When this
happens, pass the error code up so that we can retry the probe at a
later time.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: ee9f3a81ab08 ("dpaa2-eth: Fix device reference count leak in MAC endpoint handling")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ioana Ciornei
2025-07-29 00:28:52 -04:00
committed by Greg Kroah-Hartman
parent b8f44f8cde
commit 5f5d326ac9
1 changed files with 5 additions and 1 deletions
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6
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
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@@ -4134,7 +4134,11 @@ static int dpaa2_eth_connect_mac(struct dpaa2_eth_priv *priv)
dpni_dev = to_fsl_mc_device(priv->net_dev->dev.parent);
dpmac_dev = fsl_mc_get_endpoint(dpni_dev);
if (IS_ERR_OR_NULL(dpmac_dev) || dpmac_dev->dev.type != &fsl_mc_bus_dpmac_type)
if (PTR_ERR(dpmac_dev) == -EPROBE_DEFER)
return PTR_ERR(dpmac_dev);
if (IS_ERR(dpmac_dev) || dpmac_dev->dev.type != &fsl_mc_bus_dpmac_type)
return 0;
mac = kzalloc(sizeof(struct dpaa2_mac), GFP_KERNEL);