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| author | Jussi Kivilinna <jussi.kivilinna@mbnet.fi> | 2009-04-21 19:48:07 +0300 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-04-22 16:57:20 -0400 |
| commit | 8d4d99ae89a8845a1d63b0529dd98da28dc0ff65 (patch) | |
| tree | 40f248e8dee1f73d33fa8fe9c75ddea14e39cc21 /drivers/net/wireless/rndis_wlan.c | |
| parent | caa6dfadebee2098e9c5ece1d5efae96a6926d0f (diff) | |
| download | lwn-8d4d99ae89a8845a1d63b0529dd98da28dc0ff65.tar.gz lwn-8d4d99ae89a8845a1d63b0529dd98da28dc0ff65.zip | |
rndis_wlan: fix initialization order for workqueue&workers
rndis_wext_link_change() might be called from rndis_command() at
initialization stage and priv->workqueue/priv->work have not been
initialized yet. This causes invalid opcode at rndis_wext_bind on
some brands of bcm4320.
Fix by initializing workqueue/workers in rndis_wext_bind() before
rndis_command is used.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rndis_wlan.c')
| -rw-r--r-- | drivers/net/wireless/rndis_wlan.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c index 4b11ceae5b64..9ef547d6724e 100644 --- a/drivers/net/wireless/rndis_wlan.c +++ b/drivers/net/wireless/rndis_wlan.c @@ -2384,6 +2384,12 @@ static int rndis_wext_bind(struct usbnet *usbdev, struct usb_interface *intf) mutex_init(&priv->command_lock); spin_lock_init(&priv->stats_lock); + /* because rndis_command() sleeps we need to use workqueue */ + priv->workqueue = create_singlethread_workqueue("rndis_wlan"); + INIT_WORK(&priv->work, rndis_wext_worker); + INIT_DELAYED_WORK(&priv->stats_work, rndis_update_wireless_stats); + INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results); + /* try bind rndis_host */ retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS); if (retval < 0) @@ -2454,17 +2460,18 @@ static int rndis_wext_bind(struct usbnet *usbdev, struct usb_interface *intf) disassociate(usbdev, 1); netif_carrier_off(usbdev->net); - /* because rndis_command() sleeps we need to use workqueue */ - priv->workqueue = create_singlethread_workqueue("rndis_wlan"); - INIT_DELAYED_WORK(&priv->stats_work, rndis_update_wireless_stats); queue_delayed_work(priv->workqueue, &priv->stats_work, round_jiffies_relative(STATS_UPDATE_JIFFIES)); - INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results); - INIT_WORK(&priv->work, rndis_wext_worker); return 0; fail: + cancel_delayed_work_sync(&priv->stats_work); + cancel_delayed_work_sync(&priv->scan_work); + cancel_work_sync(&priv->work); + flush_workqueue(priv->workqueue); + destroy_workqueue(priv->workqueue); + kfree(priv); return retval; } |