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ath79: fix unaligned access panic in ag71xx_mdio_probe

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Without "syscon" being present in an ag71xx ethernet DT node's
compatible property, a panic occurs at boot during probe citing
"Unhandled kernel unaligned access".

With this modification, the panic no longer occurs and instead the probe
simply fails, allowing the boot process to continue.

Signed-off-by: Matt Merhar <mattmerhar@protonmail.com>
This commit is contained in:
Matt Merhar 2018-08-30 08:58:26 -04:00 committed by Mathias Kresin
parent b672550b32
commit 9c26def64a
1 changed files with 2 additions and 2 deletions
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4
target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_mdio.c
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@ -183,8 +183,8 @@ static int ag71xx_mdio_probe(struct platform_device *pdev)
return -ENOMEM;
am->mii_regmap = syscon_regmap_lookup_by_phandle(np, "regmap");
if (!am->mii_regmap)
return -ENOENT;
if (IS_ERR(am->mii_regmap))
return PTR_ERR(am->mii_regmap);
mii_bus = devm_mdiobus_alloc(amdev);
if (!mii_bus)