From a7d5b76d9a7e434e32a5b2815db45489617dcba6 Mon Sep 17 00:00:00 2001 From: Clemens Buchacher Date: Sat, 22 Oct 2011 02:56:20 +0000 Subject: [PATCH] jme: fix irq storm after suspend/resume If the device is down during suspend/resume, interrupts are enabled without a registered interrupt handler, causing a storm of unhandled interrupts until the IRQ is disabled because "nobody cared". Instead, check that the device is up before touching it in the suspend/resume code. Fixes https://bugzilla.kernel.org/show_bug.cgi?id=39112 Helped-by: Adrian Chadd Helped-by: Mohammed Shafi Signed-off-by: Clemens Buchacher Signed-off-by: David S. Miller --- drivers/net/jme.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/jme.c b/drivers/net/jme.c index 3ac262f55633..7a8a3b64276c 100644 --- a/drivers/net/jme.c +++ b/drivers/net/jme.c @@ -3131,6 +3131,9 @@ jme_suspend(struct device *dev) struct net_device *netdev = pci_get_drvdata(pdev); struct jme_adapter *jme = netdev_priv(netdev); + if (!netif_running(netdev)) + return 0; + atomic_dec(&jme->link_changing); netif_device_detach(netdev); @@ -3171,6 +3174,9 @@ jme_resume(struct device *dev) struct net_device *netdev = pci_get_drvdata(pdev); struct jme_adapter *jme = netdev_priv(netdev); + if (!netif_running(netdev)) + return 0; + jme_clear_pm(jme); jme_phy_on(jme); if (test_bit(JME_FLAG_SSET, &jme->flags))