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net: dsa: lantiq_gswip: fix and improve the unsupported interface error

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While trying to use the lantiq_gswip driver on one of my boards I made
a mistake when specifying the phy-mode (because the out-of-tree driver
wants phy-mode "gmii" or "mii" for the internal PHYs). In this case the
following error is printed multiple times:
  Unsupported interface: 3

While it gives at least a hint at what may be wrong it is not very user
friendly. Print the human readable phy-mode and also which port is
configured incorrectly (this hardware supports ports 0..6) to improve
the cases where someone made a mistake.

Fixes: 14fceff477 ("net: dsa: Add Lantiq / Intel DSA driver for vrx200")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Martin Blumenstingl 2020-06-07 15:02:58 +02:00 committed by David S. Miller
parent 2dc2f76005
commit 4d3da2d8d9
1 changed files with 2 additions and 1 deletions
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3
drivers/net/dsa/lantiq_gswip.c
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@ -1452,7 +1452,8 @@ static void gswip_phylink_validate(struct dsa_switch *ds, int port,
unsupported:
bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
dev_err(ds->dev, "Unsupported interface: %d\n", state->interface);
dev_err(ds->dev, "Unsupported interface '%s' for port %d\n",
phy_modes(state->interface), port);
return;
}