Thread (274 messages) 274 messages, 5 authors, 2016-07-30

[added to the 4.1 stable tree] jme: Fix device PM wakeup API usage

From: Sasha Levin <hidden>
Date: 2016-07-12 02:59:21
Subsystem: jme network driver, networking drivers, the rest · Maintainers: Guo-Fu Tseng, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

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

This patch has been added to the 4.1 stable tree. If you have any
objections, please let us know.

===============

[ Upstream commit 81422e672f8181d7ad1ee6c60c723aac649f538f ]

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 <redacted>
Signed-off-by: Guo-Fu Tseng <cooldavid@cooldavid.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <redacted>
---
 drivers/net/ethernet/jme.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/jme.c b/drivers/net/ethernet/jme.c
index 73351d2..46e8d5b 100644
--- a/drivers/net/ethernet/jme.c
+++ b/drivers/net/ethernet/jme.c
@@ -1935,7 +1935,7 @@ 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);
@@ -2656,8 +2656,6 @@ 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;
 }
 
@@ -3182,7 +3180,7 @@ 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;
-- 
2.5.0
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