diff options
| author | Michael Walle <michael@walle.cc> | 2022-05-26 02:12:39 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-05-27 06:45:29 +0300 |
| commit | b58cdd4388b1d8f5bee9f5a3897a7e780d1eaa48 (patch) | |
| tree | b16ea24c177cd635c1a628a9c2923d37e9e9914e /drivers/net | |
| parent | 4548ad7287c45047b2c1d536e110e0cfaccde1c9 (diff) | |
| download | linux-b58cdd4388b1d8f5bee9f5a3897a7e780d1eaa48.tar.xz | |
net: lan966x: check devm_of_phy_get() for -EDEFER_PROBE
At the moment, if devm_of_phy_get() returns an error the serdes
simply isn't set. While it is bad to ignore an error in general, there
is a particular bug that network isn't working if the serdes driver is
compiled as a module. In that case, devm_of_phy_get() returns
-EDEFER_PROBE and the error is silently ignored.
The serdes is optional, it is not there if the port is using RGMII, in
which case devm_of_phy_get() returns -ENODEV. Rearrange the error
handling so that -ENODEV will be handled but other error codes will
abort the probing.
Fixes: d28d6d2e37d1 ("net: lan966x: add port module support")
Signed-off-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20220525231239.1307298-1-michael@walle.cc
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/microchip/lan966x/lan966x_main.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c index 6ad68b422129..5784c4161e5e 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c @@ -1120,8 +1120,13 @@ static int lan966x_probe(struct platform_device *pdev) lan966x->ports[p]->fwnode = fwnode_handle_get(portnp); serdes = devm_of_phy_get(lan966x->dev, to_of_node(portnp), NULL); - if (!IS_ERR(serdes)) - lan966x->ports[p]->serdes = serdes; + if (PTR_ERR(serdes) == -ENODEV) + serdes = NULL; + if (IS_ERR(serdes)) { + err = PTR_ERR(serdes); + goto cleanup_ports; + } + lan966x->ports[p]->serdes = serdes; lan966x_port_init(lan966x->ports[p]); } |