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net: stmicro: fix a missing check of clk_prepare

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clk_prepare() could fail, so let's check its status, and if it fails,
return its error code upstream.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kangjie Lu 2018-12-25 20:57:14 -06:00 committed by David S. Miller
parent 2d822f2dba
commit f86a3b8383
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c
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@ -59,7 +59,9 @@ static int sun7i_gmac_init(struct platform_device *pdev, void *priv)
gmac->clk_enabled = 1;
} else {
clk_set_rate(gmac->tx_clk, SUN7I_GMAC_MII_RATE);
clk_prepare(gmac->tx_clk);
ret = clk_prepare(gmac->tx_clk);
if (ret)
return ret;
}
return 0;