[PATCH 4.4 157/163] jme: Fix device PM wakeup API usage

Greg Kroah-Hartman
2016-05-03T00:27:11Z

From: Guo-Fu Tseng <cooldavid@cooldavid.org>

commit 81422e672f8181d7ad1ee6c60c723aac649f538f upstream.

According to Documentation/power/devices.txt

The driver should not use device_set_wakeup_enable() which is the policy
for user to decide.

Using device_init_wakeup() to initialize dev->power.should_wakeup and
dev->power.can_wakeup on driver initialization.

And use device_may_wakeup() on suspend to decide if WoL function should
be enabled on NIC.

Reported-by: Diego Viola <diego.viola@gmail.com>
Signed-off-by: Guo-Fu Tseng <cooldavid@cooldavid.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/net/ethernet/jme.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

--- a/drivers/net/ethernet/jme.c
+++ b/drivers/net/ethernet/jme.c
@@ -1931,7 +1931,7 @@ jme_wait_link(struct jme_adapter *jme)
static void
jme_powersave_phy(struct jme_adapter *jme)
{
- if (jme->reg_pmcs) {
+ if (jme->reg_pmcs && device_may_wakeup(&jme->pdev->dev)) {
jme_set_100m_half(jme);
if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
jme_wait_link(jme);
@@ -2652,8 +2652,6 @@ jme_set_wol(struct net_device *netdev,
if (wol->wolopts & WAKE_MAGIC)
jme->reg_pmcs |= PMCS_MFEN;

- device_set_wakeup_enable(&jme->pdev->dev, !!(jme->reg_pmcs));
-
return 0;
}

@@ -3178,7 +3176,7 @@ jme_init_one(struct pci_dev *pdev,
jme->mii_if.mdio_write = jme_mdio_write;

jme_clear_pm_disable_wol(jme);
- device_set_wakeup_enable(&pdev->dev, true);
+ device_init_wakeup(&pdev->dev, true);

jme_set_phyfifo_5level(jme);
jme->pcirev = pdev->revision;