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net: dsa: print error on invalid port index

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Looking for an -EINVAL all over the dsa code could take hours for
inexperienced DSA users.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20210106090915.21439-1-zajec5@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Rafał Miłecki 2021-01-06 10:09:15 +01:00 committed by Jakub Kicinski
parent ede71cae72
commit 8209f5bc3b
1 changed files with 2 additions and 0 deletions
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2
net/dsa/dsa2.c
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@ -783,6 +783,8 @@ static int dsa_switch_parse_ports_of(struct dsa_switch *ds,
goto out_put_node;
if (reg >= ds->num_ports) {
dev_err(ds->dev, "port %pOF index %u exceeds num_ports (%zu)\n",
port, reg, ds->num_ports);
err = -EINVAL;
goto out_put_node;
}