staging: vt6656: covert RXvMngWorkItem to work queue

Tasklet to workqueue.
RxMngWorkItem -> rx_mng_work_item

Reduce atomic area of driver and dependency on system timer.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6656/device.h

@@ -385,7 +385,7 @@ struct vnt_private {
 	struct tasklet_struct CmdWorkItem;
 	struct tasklet_struct EventWorkItem;
 	struct work_struct read_work_item;
-	struct tasklet_struct RxMngWorkItem;
+	struct work_struct rx_mng_work_item;
 
 	u32 rx_buf_sz;
 	int multicast_limit;

drivers/staging/vt6656/dpc.c

@@ -559,7 +559,7 @@ int RXbBulkInProcessData(struct vnt_private *pDevice, struct vnt_rcb *pRCB,
             }
             if (pDevice->bIsRxMngWorkItemQueued == false) {
                 pDevice->bIsRxMngWorkItemQueued = true;
-                tasklet_schedule(&pDevice->RxMngWorkItem);
+		schedule_work(&pDevice->rx_mng_work_item);
             }
 
         }
@@ -1390,8 +1390,10 @@ void RXvFreeRCB(struct vnt_rcb *pRCB, int bReAllocSkb)
     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"<----RXFreeRCB %d %d\n",pDevice->NumRecvFreeList, pDevice->NumRecvMngList);
 }
 
-void RXvMngWorkItem(struct vnt_private *pDevice)
+void RXvMngWorkItem(struct work_struct *work)
 {
+	struct vnt_private *pDevice =
+		container_of(work, struct vnt_private, rx_mng_work_item);
 	struct vnt_rcb *pRCB = NULL;
 	struct vnt_rx_mgmt *pRxPacket;
 	int bReAllocSkb = false;

drivers/staging/vt6656/dpc.h

@@ -34,7 +34,7 @@
 
 void RXvWorkItem(struct work_struct *work);
 
-void RXvMngWorkItem(void *Context);
+void RXvMngWorkItem(struct work_struct *work);
 
 void RXvFreeRCB(struct vnt_rcb *pRCB, int bReAllocSkb);
 

drivers/staging/vt6656/main_usb.c

@@ -705,6 +705,7 @@ vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
 	INIT_DELAYED_WORK(&pDevice->run_command_work, vRunCommand);
 	INIT_DELAYED_WORK(&pDevice->second_callback_work, BSSvSecondCallBack);
 	INIT_WORK(&pDevice->read_work_item, RXvWorkItem);
+	INIT_WORK(&pDevice->rx_mng_work_item, RXvMngWorkItem);
 
 	pDevice->tx_80211 = device_dma0_tx_80211;
 	pDevice->vnt_mgmt.pAdapter = (void *) pDevice;
@@ -984,7 +985,7 @@ static int  device_open(struct net_device *dev)
     }
 
     vMgrObjectInit(pDevice);
-    tasklet_init(&pDevice->RxMngWorkItem, (void *)RXvMngWorkItem, (unsigned long)pDevice);
+
     tasklet_init(&pDevice->EventWorkItem, (void *)INTvWorkItem, (unsigned long)pDevice);
 
 	schedule_delayed_work(&pDevice->second_callback_work, HZ);
@@ -1091,8 +1092,8 @@ static int device_close(struct net_device *dev)
         del_timer(&pDevice->TimerSQ3Tmax2);
         del_timer(&pDevice->TimerSQ3Tmax3);
     }
-    tasklet_kill(&pDevice->RxMngWorkItem);
 
+	cancel_work_sync(&pDevice->rx_mng_work_item);
 	cancel_work_sync(&pDevice->read_work_item);
 
     tasklet_kill(&pDevice->EventWorkItem);