openwrtv3/target/linux/mediatek/patches-4.9/0062-mdio-atomic.patch

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--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -97,7 +97,10 @@ static int mtk_mdio_busy_wait(struct mtk
return 0;
if (time_after(jiffies, t_start + PHY_IAC_TIMEOUT))
break;
- usleep_range(10, 20);
+ if (in_atomic())
+ udelay(10);
+ else
+ usleep_range(10, 20);
}
dev_err(eth->dev, "mdio: MDIO timeout\n");