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mediatek: fix mdio schedule while atomic error 

Signed-off-by: John Crispin <john@phrozen.org>
owl
John Crispin 2017-09-07 10:11:45 +02:00
parent 9a753c49ea
commit 23317f18bd
1 changed files with 16 additions and 0 deletions
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16
target/linux/mediatek/patches-4.9/0062-mdio-atomic.patch Normal file
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@ -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");