From: Jussi Kivilinna Date: Tue, 21 Apr 2009 16:48:07 +0000 (+0300) Subject: rndis_wlan: fix initialization order for workqueue&workers X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8d4d99ae89a8845a1d63b0529dd98da28dc0ff65;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git 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 Signed-off-by: John W. Linville --- 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; }