[PATCH 5.16 042/121] net: ethernet: lpc_eth: Handle error for clk_enable

Greg Kroah-Hartman
2022-03-14T12:24:42Z

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 bc39558fe82b..756f97dce85b 100644
--- a/drivers/net/ethernet/nxp/lpc_eth.c
+++ b/drivers/net/ethernet/nxp/lpc_eth.c
@@ -1471,6 +1471,7 @@ 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);
@@ -1480,7 +1481,9 @@ 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