net: stmmac: dwmac-rk: fix unbalanced pm_runtime_enable warnings

commit 2d26f6e39afb88d32b8f39e76a51b542c3c51674 upstream.

This reverts commit 2c896fb02e7f65299646f295a007bda043e0f382
"net: stmmac: dwmac-rk: add pd_gmac support for rk3399" and fixes
unbalanced pm_runtime_enable warnings.

In the commit to be reverted, support for power management was
introduced to the Rockchip glue code. Later, power management support
was introduced to the stmmac core code, resulting in multiple
invocations of pm_runtime_{enable,disable,get_sync,put_sync}.

The multiple invocations happen in rk_gmac_powerup and
stmmac_{dvr_probe, resume} as well as in rk_gmac_powerdown and
stmmac_{dvr_remove, suspend}, respectively, which are always called
in conjunction.

Fixes: 5ec55823438e850c91c6b92aec93fb04ebde29e2 ("net: stmmac: add clocks management for gmac driver")
Signed-off-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Meng Li <Meng.Li@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 6ef30252bfe0a7e9e7619b5a7174a5ec4ba323b3..143b2cb13bf94795fcddec7e8752a57054c33be3 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -21,7 +21,6 @@
 #include <linux/delay.h>
 #include <linux/mfd/syscon.h>
 #include <linux/regmap.h>
-#include <linux/pm_runtime.h>
 
 #include "stmmac_platform.h"
 
@@ -1336,9 +1335,6 @@ static int rk_gmac_powerup(struct rk_priv_data *bsp_priv)
                return ret;
        }
 
-       pm_runtime_enable(dev);
-       pm_runtime_get_sync(dev);
-
        if (bsp_priv->integrated_phy)
                rk_gmac_integrated_phy_powerup(bsp_priv);
 
@@ -1347,14 +1343,9 @@ static int rk_gmac_powerup(struct rk_priv_data *bsp_priv)
 
 static void rk_gmac_powerdown(struct rk_priv_data *gmac)
 {
-       struct device *dev = &gmac->pdev->dev;
-
        if (gmac->integrated_phy)
                rk_gmac_integrated_phy_powerdown(gmac);
 
-       pm_runtime_put_sync(dev);
-       pm_runtime_disable(dev);
-
        phy_power_on(gmac, false);
        gmac_clk_enable(gmac, false);
 }