From 53a3c0032ef51439ea2ff9f583706ce8a7055c96 Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Wed, 8 Jun 2011 19:29:35 +0000 Subject: [PATCH] cnic: Improve NETDEV_UP event handling commit db1d350fcb156b58f66a67680617077bcacfe6fc upstream. During NETDEV_UP, we use symbol_get() to get the net driver's cnic probe function. This sometimes doesn't work if NETDEV_UP happens right after NETDEV_REGISTER and the net driver is still running module init code. As a result, the cnic device may not be discovered. We fix this by probing on all NETDEV events if the device's netif_running state is up. Signed-off-by: Michael Chan Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/cnic.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c index a529bde03c56..6c544b3411fa 100644 --- a/drivers/net/cnic.c +++ b/drivers/net/cnic.c @@ -5342,7 +5342,7 @@ static int cnic_netdev_event(struct notifier_block *this, unsigned long event, dev = cnic_from_netdev(netdev); - if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) { + if (!dev && (event == NETDEV_REGISTER || netif_running(netdev))) { /* Check for the hot-plug device */ dev = is_cnic_dev(netdev); if (dev) { @@ -5358,7 +5358,7 @@ static int cnic_netdev_event(struct notifier_block *this, unsigned long event, else if (event == NETDEV_UNREGISTER) cnic_ulp_exit(dev); - if (event == NETDEV_UP) { + if (event == NETDEV_UP || (new_dev && netif_running(netdev))) { if (cnic_register_netdev(dev) != 0) { cnic_put(dev); goto done; -- 2.39.5