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sh_eth: Remove obsolete explicit clock handling for WoL 

Currently, if Wake-on-LAN is enabled, the SH-ETH device's module clock
is manually kept running during system suspend, to make sure the device
stays active.

Since commits 91c719f5ec ("soc: renesas: rcar-sysc: Keep wakeup
sources active during system suspend") and 744dddcae8 ("clk:
renesas: mstp: Keep wakeup sources active during system suspend"), this
workaround is no longer needed.  Hence remove all explicit clock
handling to keep the device active.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Geert Uytterhoeven 2018-02-12 14:42:36 +01:00 committed by David S. Miller
parent dd62c236c0
commit b4580c952e
1 changed files with 3 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/net/ethernet/renesas/sh_eth.c
View File

@ -40,7 +40,6 @@
#include <linux/slab.h>
#include <linux/ethtool.h>
#include <linux/if_vlan.h>
#include <linux/clk.h>
#include <linux/sh_eth.h>
#include <linux/of_mdio.h>
@ -2304,7 +2303,7 @@ static void sh_eth_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
wol->supported = 0;
wol->wolopts = 0;
if (mdp->cd->magic && mdp->clk) {
if (mdp->cd->magic) {
wol->supported = WAKE_MAGIC;
wol->wolopts = mdp->wol_enabled ? WAKE_MAGIC : 0;
}
@ -2314,7 +2313,7 @@ static int sh_eth_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
{
struct sh_eth_private *mdp = netdev_priv(ndev);
if (!mdp->cd->magic || !mdp->clk || wol->wolopts & ~WAKE_MAGIC)
if (!mdp->cd->magic || wol->wolopts & ~WAKE_MAGIC)
return -EOPNOTSUPP;
mdp->wol_enabled = !!(wol->wolopts & WAKE_MAGIC);
@ -3153,11 +3152,6 @@ static int sh_eth_drv_probe(struct platform_device *pdev)
goto out_release;
}
/* Get clock, if not found that's OK but Wake-On-Lan is unavailable */
mdp->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(mdp->clk))
mdp->clk = NULL;
ndev->base_addr = res->start;
spin_lock_init(&mdp->lock);
@ -3278,7 +3272,7 @@ static int sh_eth_drv_probe(struct platform_device *pdev)
if (ret)
goto out_napi_del;
if (mdp->cd->magic && mdp->clk)
if (mdp->cd->magic)
device_set_wakeup_capable(&pdev->dev, 1);
/* print device information */
@ -3331,9 +3325,6 @@ static int sh_eth_wol_setup(struct net_device *ndev)
/* Enable MagicPacket */
sh_eth_modify(ndev, ECMR, ECMR_MPDE, ECMR_MPDE);
/* Increased clock usage so device won't be suspended */
clk_enable(mdp->clk);
return enable_irq_wake(ndev->irq);
}
@ -3359,9 +3350,6 @@ static int sh_eth_wol_restore(struct net_device *ndev)
if (ret < 0)
return ret;
/* Restore clock usage count */
clk_disable(mdp->clk);
return disable_irq_wake(ndev->irq);
}