From 9c26def64ad9891a036dcabcde11d58ecd59e8f4 Mon Sep 17 00:00:00 2001 From: Matt Merhar Date: Thu, 30 Aug 2018 08:58:26 -0400 Subject: [PATCH] ath79: fix unaligned access panic in ag71xx_mdio_probe 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 --- .../files/drivers/net/ethernet/atheros/ag71xx/ag71xx_mdio.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_mdio.c b/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_mdio.c index 0bfc1546cd..58aef74872 100644 --- a/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_mdio.c +++ b/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_mdio.c @@ -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)