linux-kernel - [PATCH 3.12 57/78] jme: Do not enable NIC WoL functions on S0

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Message-Id: <f88511401a8ffeeadd72e7eaca02a6ede31248d3.1461323133.git.jslaby@suse.cz>
Date:	Fri, 22 Apr 2016 13:05:40 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Guo-Fu Tseng <cooldavid@...ldavid.org>,
	"David S . Miller" <davem@...emloft.net>,
	Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 57/78] jme: Do not enable NIC WoL functions on S0

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

3.12-stable review patch.  If anyone has any objections, please let me know.

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

commit 0772a99b818079e628a1da122ac7ee023faed83e upstream.

Otherwise it might be back on resume right after going to suspend in
some hardware.

Reported-by: Diego Viola <diego.viola@...il.com>
Signed-off-by: Guo-Fu Tseng <cooldavid@...ldavid.org>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/net/ethernet/jme.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/jme.c b/drivers/net/ethernet/jme.c
index 2602fb324157..3291bf72e998 100644
--- a/drivers/net/ethernet/jme.c
+++ b/drivers/net/ethernet/jme.c
@@ -270,11 +270,17 @@ jme_reset_mac_processor(struct jme_adapter *jme)
 }
 
 static inline void
-jme_clear_pm(struct jme_adapter *jme)
+jme_clear_pm_enable_wol(struct jme_adapter *jme)
 {
 	jwrite32(jme, JME_PMCS, PMCS_STMASK | jme->reg_pmcs);
 }
 
+static inline void
+jme_clear_pm_disable_wol(struct jme_adapter *jme)
+{
+	jwrite32(jme, JME_PMCS, PMCS_STMASK);
+}
+
 static int
 jme_reload_eeprom(struct jme_adapter *jme)
 {
@@ -1857,7 +1863,7 @@ jme_open(struct net_device *netdev)
 	struct jme_adapter *jme = netdev_priv(netdev);
 	int rc;
 
-	jme_clear_pm(jme);
+	jme_clear_pm_disable_wol(jme);
 	JME_NAPI_ENABLE(jme);
 
 	tasklet_init(&jme->linkch_task, jme_link_change_tasklet,
@@ -1933,7 +1939,7 @@ jme_powersave_phy(struct jme_adapter *jme)
 		jme_set_100m_half(jme);
 		if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
 			jme_wait_link(jme);
-		jme_clear_pm(jme);
+		jme_clear_pm_enable_wol(jme);
 	} else {
 		jme_phy_off(jme);
 	}
@@ -2621,7 +2627,6 @@ jme_set_wol(struct net_device *netdev,
 	if (wol->wolopts & WAKE_MAGIC)
 		jme->reg_pmcs |= PMCS_MFEN;
 
-	jwrite32(jme, JME_PMCS, jme->reg_pmcs);
 	device_set_wakeup_enable(&jme->pdev->dev, !!(jme->reg_pmcs));
 
 	return 0;
@@ -3147,7 +3152,7 @@ jme_init_one(struct pci_dev *pdev,
 	jme->mii_if.mdio_read = jme_mdio_read;
 	jme->mii_if.mdio_write = jme_mdio_write;
 
-	jme_clear_pm(jme);
+	jme_clear_pm_disable_wol(jme);
 	device_set_wakeup_enable(&pdev->dev, true);
 
 	jme_set_phyfifo_5level(jme);
@@ -3281,7 +3286,7 @@ jme_resume(struct device *dev)
 	if (!netif_running(netdev))
 		return 0;
 
-	jme_clear_pm(jme);
+	jme_clear_pm_disable_wol(jme);
 	jme_phy_on(jme);
 	if (test_bit(JME_FLAG_SSET, &jme->flags))
 		jme_set_settings(netdev, &jme->old_ecmd);
-- 
2.8.1