[PATCH 4.9 04/20] net: ethernet: lpc_eth: Handle error for clk_enable

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

From: Jiasheng Jiang <jiasheng@iscas.ac.cn>

[ Upstream commit 2169b79258c8be803d2595d6456b1e77129fe154 ]

As the potential failure of the clk_enable(),
it should be better to check it and return error
if fails.

Fixes: b7370112f519 ("lpc32xx: Added ethernet driver")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/nxp/lpc_eth.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c
index ad7b9772a4b2..78f34e87212a 100644
--- a/drivers/net/ethernet/nxp/lpc_eth.c
+++ b/drivers/net/ethernet/nxp/lpc_eth.c
@@ -1515,6 +1515,7 @@ static int lpc_eth_drv_resume(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct netdata_local *pldat;
+	int ret;
 
 	if (device_may_wakeup(&pdev->dev))
 		disable_irq_wake(ndev->irq);
@@ -1524,7 +1525,9 @@ static int lpc_eth_drv_resume(struct platform_device *pdev)
 			pldat = netdev_priv(ndev);
 
 			/* Enable interface clock */
-			clk_enable(pldat->clk);
+			ret = clk_enable(pldat->clk);
+			if (ret)
+				return ret;
 
 			/* Reset and initialize */
 			__lpc_eth_reset(pldat);
-- 
2.34.1