net: lan966x: check devm_of_phy_get() for -EDEFER_PROBE

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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: d28d6d2e37 ("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>

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This commit is contained in:

Michael Walle 2022-05-26 01:12:39 +02:00 • committed by Jakub Kicinski

parent 4548ad7287

commit b58cdd4388

1 changed files with 7 additions and 2 deletions

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drivers/net/ethernet/microchip/lan966x/lan966x_main.c

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