From: Michael Chan <mc...@broadcom.com>
-------------------
This is a commit scheduled for the next v2.6.34 longterm release.
http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git
If you see a problem with using this for longterm, please comment.
-------------------
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 <mc...@broadcom.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Paul Gortmaker <paul.gortma...@windriver.com>
---
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 4b451a7..49242ac 100644
--- a/drivers/net/cnic.c
+++ b/drivers/net/cnic.c
@@ -4528,7 +4528,7 @@ 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) {
@@ -4544,7 +4544,7 @@ 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;
--
1.7.12.rc2
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