This is to prepare WOL support with phy. Compared with WOL
implementation which relies on the MAC's PMT features, in phy
supported WOL case, device_may_wakeup() may also be true, but we
should not call mac's pmt() function if HW doesn't enable PMT.
And during resume, we should call phylink_start() if PMT is disabled.
Signed-off-by: Jisheng Zhang <jisheng.zh...@synaptics.com>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 73677c3b33b6..358fd3bf9ef5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -5085,7 +5085,7 @@ int stmmac_suspend(struct device *dev)
priv->plat->serdes_powerdown(ndev, priv->plat->bsp_priv);
/* Enable Power down mode by programming the PMT regs */
- if (device_may_wakeup(priv->device)) {
+ if (device_may_wakeup(priv->device) && priv->plat->pmt) {
stmmac_pmt(priv, priv->hw, priv->wolopts);
priv->irq_wake = 1;
} else {
@@ -5157,7 +5157,7 @@ int stmmac_resume(struct device *dev)
* this bit because it can generate problems while resuming
* from another devices (e.g. serial console).
*/
- if (device_may_wakeup(priv->device)) {
+ if (device_may_wakeup(priv->device) && priv->plat->pmt) {
mutex_lock(&priv->lock);
stmmac_pmt(priv, priv->hw, 0);
mutex_unlock(&priv->lock);
@@ -5200,7 +5200,7 @@ int stmmac_resume(struct device *dev)
mutex_unlock(&priv->lock);
- if (!device_may_wakeup(priv->device)) {
+ if (!device_may_wakeup(priv->device) || !priv->plat->pmt) {
rtnl_lock();
phylink_start(priv->phylink);
rtnl_unlock();
--
2.28.0.rc0
