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Commit b71af046 authored by Mikhail Ulyanov's avatar Mikhail Ulyanov Committed by David S. Miller
Browse files

sh_eth: add more PM methods 



Add sh_eth_{suspend|resume}() implementing {suspend|resume|freeze|thaw|poweroff|
restore}() PM methods to make it possible to restore from hibernation not only
in Linux  but also in e.g. U-Boot and  to have more determined state on resume/
restore.

Signed-off-by: default avatarMikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
[Sergei: moved sh_eth_{suspend|resume}() before sh_eth_runtime_nop(), enclosed
them with #ifdef CONFIG_PM_SLEEP, reordered the local variables, got rid of
*goto* and label, reordered macro invocations, renamed, modified the changelog.]
Signed-off-by: default avatarSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e7d7e898

drivers/net/ethernet/renesas/sh_eth.c

+31 −0
Original line number Diff line number Diff line
@@ -2947,6 +2947,36 @@ static int sh_eth_drv_remove(struct platform_device *pdev) 
}



#ifdef CONFIG_PM

#ifdef CONFIG_PM_SLEEP

static int sh_eth_suspend(struct device *dev)

{

	struct net_device *ndev = dev_get_drvdata(dev);

	int ret = 0;



	if (netif_running(ndev)) {

		netif_device_detach(ndev);

		ret = sh_eth_close(ndev);

	}



	return ret;

}



static int sh_eth_resume(struct device *dev)

{

	struct net_device *ndev = dev_get_drvdata(dev);

	int ret = 0;



	if (netif_running(ndev)) {

		ret = sh_eth_open(ndev);

		if (ret < 0)

			return ret;

		netif_device_attach(ndev);

	}



	return ret;

}

#endif



static int sh_eth_runtime_nop(struct device *dev)

{

	/* Runtime PM callback shared between ->runtime_suspend()
@@ -2960,6 +2990,7 @@ static int sh_eth_runtime_nop(struct device *dev) 
}



static const struct dev_pm_ops sh_eth_dev_pm_ops = {

	SET_SYSTEM_SLEEP_PM_OPS(sh_eth_suspend, sh_eth_resume)

	SET_RUNTIME_PM_OPS(sh_eth_runtime_nop, sh_eth_runtime_nop, NULL)

};

#define SH_ETH_PM_OPS (&sh_eth_dev_pm_ops)