sh_eth: enclose PM code into #ifdef CONFIG_PM

Put '#ifdef CONFIG_PM' around sh_eth_runtime_nop() and 'sh_eth_dev_pm_ops'.
Add '#define SH_ETH_PM_OPS' to facilitate initialization of driver's 'pm' field
depending on whether CONFIG_PM is enabled.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
[Sergei: added the changelog, reworded the subject, changing the prefix.]
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index d190c1e..0699b1e 100644 (file)
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -2673,6 +2673,7 @@ static int sh_eth_drv_remove(struct platform_device *pdev)
        return 0;
 }
 
+#ifdef CONFIG_PM
 static int sh_eth_runtime_nop(struct device *dev)
 {
        /*
@@ -2686,17 +2687,21 @@ static int sh_eth_runtime_nop(struct device *dev)
        return 0;
 }
 
-static struct dev_pm_ops sh_eth_dev_pm_ops = {
+static const struct dev_pm_ops sh_eth_dev_pm_ops = {
        .runtime_suspend = sh_eth_runtime_nop,
        .runtime_resume = sh_eth_runtime_nop,
 };
+#define SH_ETH_PM_OPS (&sh_eth_dev_pm_ops)
+#else
+#define SH_ETH_PM_OPS NULL
+#endif
 
 static struct platform_driver sh_eth_driver = {
        .probe = sh_eth_drv_probe,
        .remove = sh_eth_drv_remove,
        .driver = {
                   .name = CARDNAME,
-                  .pm = &sh_eth_dev_pm_ops,
+                  .pm = SH_ETH_PM_OPS,
        },
 };