mediatek: fix mdio schedule while atomic error

Signed-off-by: John Crispin <john@phrozen.org>
7 years ago · 23317f18bd
parent 9a753c49ea
commit 23317f18bd
1 changed files with 16 additions and 0 deletions
--- a/target/linux/mediatek/patches-4.9/0062-mdio-atomic.patch
+++ b/target/linux/mediatek/patches-4.9/0062-mdio-atomic.patch
@ -0,0 +1,16 @@
+Index: linux-4.9.47/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+===================================================================
+--- linux-4.9.47.orig/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ linux-4.9.47/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");