Commit 53080fe9 authored by Fabio Estevam's avatar Fabio Estevam Committed by David S. Miller

net: lpc_eth: Check clk_prepare_enable() error

clk_prepare_enable() may fail, so we should better check its return
value and propagate it in the case of failure

While at it, replace __lpc_eth_clock_enable() with a plain
clk_prepare_enable/clk_disable_unprepare() call in order to
simplify the code.
Signed-off-by: default avatarFabio Estevam <fabio.estevam@nxp.com>
Acked-by: default avatarVladimir Zapolskiy <vz@mleia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1bc261fa
...@@ -475,14 +475,6 @@ static void __lpc_get_mac(struct netdata_local *pldat, u8 *mac) ...@@ -475,14 +475,6 @@ static void __lpc_get_mac(struct netdata_local *pldat, u8 *mac)
mac[5] = tmp >> 8; mac[5] = tmp >> 8;
} }
static void __lpc_eth_clock_enable(struct netdata_local *pldat, bool enable)
{
if (enable)
clk_prepare_enable(pldat->clk);
else
clk_disable_unprepare(pldat->clk);
}
static void __lpc_params_setup(struct netdata_local *pldat) static void __lpc_params_setup(struct netdata_local *pldat)
{ {
u32 tmp; u32 tmp;
...@@ -1056,7 +1048,7 @@ static int lpc_eth_close(struct net_device *ndev) ...@@ -1056,7 +1048,7 @@ static int lpc_eth_close(struct net_device *ndev)
writel(0, LPC_ENET_MAC2(pldat->net_base)); writel(0, LPC_ENET_MAC2(pldat->net_base));
spin_unlock_irqrestore(&pldat->lock, flags); spin_unlock_irqrestore(&pldat->lock, flags);
__lpc_eth_clock_enable(pldat, false); clk_disable_unprepare(pldat->clk);
return 0; return 0;
} }
...@@ -1197,11 +1189,14 @@ static int lpc_eth_ioctl(struct net_device *ndev, struct ifreq *req, int cmd) ...@@ -1197,11 +1189,14 @@ static int lpc_eth_ioctl(struct net_device *ndev, struct ifreq *req, int cmd)
static int lpc_eth_open(struct net_device *ndev) static int lpc_eth_open(struct net_device *ndev)
{ {
struct netdata_local *pldat = netdev_priv(ndev); struct netdata_local *pldat = netdev_priv(ndev);
int ret;
if (netif_msg_ifup(pldat)) if (netif_msg_ifup(pldat))
dev_dbg(&pldat->pdev->dev, "enabling %s\n", ndev->name); dev_dbg(&pldat->pdev->dev, "enabling %s\n", ndev->name);
__lpc_eth_clock_enable(pldat, true); ret = clk_prepare_enable(pldat->clk);
if (ret)
return ret;
/* Suspended PHY makes LPC ethernet core block, so resume now */ /* Suspended PHY makes LPC ethernet core block, so resume now */
phy_resume(ndev->phydev); phy_resume(ndev->phydev);
...@@ -1320,7 +1315,9 @@ static int lpc_eth_drv_probe(struct platform_device *pdev) ...@@ -1320,7 +1315,9 @@ static int lpc_eth_drv_probe(struct platform_device *pdev)
} }
/* Enable network clock */ /* Enable network clock */
__lpc_eth_clock_enable(pldat, true); ret = clk_prepare_enable(pldat->clk);
if (ret)
goto err_out_clk_put;
/* Map IO space */ /* Map IO space */
pldat->net_base = ioremap(res->start, resource_size(res)); pldat->net_base = ioremap(res->start, resource_size(res));
...@@ -1454,6 +1451,7 @@ static int lpc_eth_drv_probe(struct platform_device *pdev) ...@@ -1454,6 +1451,7 @@ static int lpc_eth_drv_probe(struct platform_device *pdev)
iounmap(pldat->net_base); iounmap(pldat->net_base);
err_out_disable_clocks: err_out_disable_clocks:
clk_disable_unprepare(pldat->clk); clk_disable_unprepare(pldat->clk);
err_out_clk_put:
clk_put(pldat->clk); clk_put(pldat->clk);
err_out_free_dev: err_out_free_dev:
free_netdev(ndev); free_netdev(ndev);
......
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