[PATCH] r8169: Disable clk during suspend / resume

[Hans de Goede]

Disable the clk during suspend to save power. Note that tp->clk may be
NULL, the clk core functions handle this without problems.

Reviewed-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
Tested-by: Carlo Caione <ca...@endlessm.com>
Signed-off-by: Hans de Goede <hdego...@redhat.com>
---
 drivers/net/ethernet/realtek/r8169.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/ethernet/realtek/r8169.c 
b/drivers/net/ethernet/realtek/r8169.c
index 474229548731..c289350fb98f 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -6852,8 +6852,10 @@ static int rtl8169_suspend(struct device *device)
 {
        struct pci_dev *pdev = to_pci_dev(device);
        struct net_device *dev = pci_get_drvdata(pdev);
+       struct rtl8169_private *tp = netdev_priv(dev);
 
        rtl8169_net_suspend(dev);
+       clk_disable_unprepare(tp->clk);
 
        return 0;
 }
@@ -6881,6 +6883,9 @@ static int rtl8169_resume(struct device *device)
 {
        struct pci_dev *pdev = to_pci_dev(device);
        struct net_device *dev = pci_get_drvdata(pdev);
+       struct rtl8169_private *tp = netdev_priv(dev);
+
+       clk_prepare_enable(tp->clk);
 
        if (netif_running(dev))
                __rtl8169_resume(dev);
-- 
2.19.0