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path: root/drivers/net/phy/phy.c
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Diffstat (limited to 'drivers/net/phy/phy.c')
-rw-r--r--drivers/net/phy/phy.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index ef62f357b76d..8d3ee3a6495b 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -31,6 +31,7 @@
#include <linux/io.h>
#include <linux/uaccess.h>
#include <linux/atomic.h>
+#include <linux/suspend.h>
#include <net/netlink.h>
#include <net/genetlink.h>
#include <net/sock.h>
@@ -976,6 +977,28 @@ static irqreturn_t phy_interrupt(int irq, void *phy_dat)
struct phy_driver *drv = phydev->drv;
irqreturn_t ret;
+ /* Wakeup interrupts may occur during a system sleep transition.
+ * Postpone handling until the PHY has resumed.
+ */
+ if (IS_ENABLED(CONFIG_PM_SLEEP) && phydev->irq_suspended) {
+ struct net_device *netdev = phydev->attached_dev;
+
+ if (netdev) {
+ struct device *parent = netdev->dev.parent;
+
+ if (netdev->wol_enabled)
+ pm_system_wakeup();
+ else if (device_may_wakeup(&netdev->dev))
+ pm_wakeup_dev_event(&netdev->dev, 0, true);
+ else if (parent && device_may_wakeup(parent))
+ pm_wakeup_dev_event(parent, 0, true);
+ }
+
+ phydev->irq_rerun = 1;
+ disable_irq_nosync(irq);
+ return IRQ_HANDLED;
+ }
+
mutex_lock(&phydev->lock);
ret = drv->handle_interrupt(phydev);
mutex_unlock(&phydev->lock);