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authorClemens Buchacher <drizzd@aon.at>2011-10-22 02:56:20 +0000
committerDavid S. Miller <davem@davemloft.net>2011-10-24 02:58:09 -0400
commita7d5b76d9a7e434e32a5b2815db45489617dcba6 (patch)
tree0613e55954020f70fd21d9da6bce4bc74dd46489 /drivers/net
parent7cc9150ebe8ec06cafea9f1c10d92ddacf88d8ae (diff)
downloadlinux-a7d5b76d9a7e434e32a5b2815db45489617dcba6.tar.bz2
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 <adrian@freebsd.org> Helped-by: Mohammed Shafi <shafi.wireless@gmail.com> Signed-off-by: Clemens Buchacher <drizzd@aon.at> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/jme.c6
1 files changed, 6 insertions, 0 deletions
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))