lkml.org 
[lkml]   [2011]   [Nov]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[039/101] cnic: Improve NETDEV_UP event handling
2.6.33-longterm review patch.  If anyone has any objections, please let us know.

------------------

From: Michael Chan <mchan@broadcom.com>

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 <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/net/cnic.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/cnic.c
+++ b/drivers/net/cnic.c
@@ -4520,7 +4520,7 @@ static int cnic_netdev_event(struct noti

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) {
@@ -4536,7 +4536,7 @@ static int cnic_netdev_event(struct noti
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;



\
 
 \ /
  Last update: 2011-11-03 02:51    [W:0.241 / U:0.260 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site