staging: vt6656: PIPEnsControlIn use usb_control_msg

Now that this function is nolonger atomic useusb_control_msg.

Return STATUS_FAILURE if ntStatus less than wLength

Remove the old struct urb and struct usb_ctrlrequest structures.

Remove fMP_CONTROL_READS flag.

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

diff --git a/drivers/staging/vt6656/device.h b/drivers/staging/vt6656/device.h
index da1b70d..410e028 100644 (file)
--- a/drivers/staging/vt6656/device.h
+++ b/drivers/staging/vt6656/device.h
@@ -380,9 +380,7 @@ struct vnt_private {
        u32 uCurrentDFCBIdx;
 
        /* USB */
-       struct urb *pControlURB;
        struct urb *pInterruptURB;
-       struct usb_ctrlrequest sUsbCtlRequest;
        u32 int_interval;
 
        /* Variables to track resources for the BULK In Pipe */
@@ -743,7 +741,6 @@ struct vnt_private {
 #define fMP_RECV_SIDE_RESOURCE_ALLOCATED    0x00000080
 #define fMP_POST_READS                      0x00000100
 #define fMP_POST_WRITES                     0x00000200
-#define fMP_CONTROL_READS                   0x00000400
 
 #define MP_SET_FLAG(_M, _F)             ((_M)->Flags |= (_F))
 #define MP_CLEAR_FLAG(_M, _F)            ((_M)->Flags &= ~(_F))

diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c
index 6ca5d78..1b58cca 100644 (file)
--- a/drivers/staging/vt6656/main_usb.c
+++ b/drivers/staging/vt6656/main_usb.c
@@ -702,12 +702,6 @@ vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
        INIT_WORK(&pDevice->read_work_item, RXvWorkItem);
        INIT_WORK(&pDevice->rx_mng_work_item, RXvMngWorkItem);
 
-       pDevice->pControlURB = usb_alloc_urb(0, GFP_ATOMIC);
-       if (!pDevice->pControlURB) {
-               DBG_PRT(MSG_LEVEL_ERR, KERN_ERR"Failed to alloc control urb\n");
-               goto err_netdev;
-       }
-
        pDevice->tx_80211 = device_dma0_tx_80211;
        pDevice->vnt_mgmt.pAdapter = (void *) pDevice;
 
@@ -964,7 +958,6 @@ static int  device_open(struct net_device *dev)
     }
 
     MP_CLEAR_FLAG(pDevice, fMP_DISCONNECTED);
-    MP_CLEAR_FLAG(pDevice, fMP_CONTROL_READS);
     MP_SET_FLAG(pDevice, fMP_POST_READS);
     MP_SET_FLAG(pDevice, fMP_POST_WRITES);
 
@@ -1130,10 +1123,6 @@ static void vt6656_disconnect(struct usb_interface *intf)
 
        if (device->dev) {
                unregister_netdev(device->dev);
-
-               usb_kill_urb(device->pControlURB);
-               usb_free_urb(device->pControlURB);
-
                free_netdev(device->dev);
        }
 }

diff --git a/drivers/staging/vt6656/usbpipe.c b/drivers/staging/vt6656/usbpipe.c
index 1ab3958..9946bfd 100644 (file)
--- a/drivers/staging/vt6656/usbpipe.c
+++ b/drivers/staging/vt6656/usbpipe.c
@@ -63,7 +63,6 @@ static int          msglevel                =MSG_LEVEL_INFO;
 static void s_nsInterruptUsbIoCompleteRead(struct urb *urb);
 static void s_nsBulkInUsbIoCompleteRead(struct urb *urb);
 static void s_nsBulkOutIoCompleteWrite(struct urb *urb);
-static void s_nsControlInUsbIoCompleteRead(struct urb *urb);
 
 int PIPEnsControlOutAsyn(struct vnt_private *pDevice, u8 byRequest,
        u16 wValue, u16 wIndex, u16 wLength, u8 *pbyBuffer)
@@ -126,100 +125,25 @@ int PIPEnsControlOut(struct vnt_private *pDevice, u8 byRequest, u16 wValue,
 }
 
 int PIPEnsControlIn(struct vnt_private *pDevice, u8 byRequest, u16 wValue,
-       u16 wIndex, u16 wLength,  u8 *pbyBuffer)
-       __releases(&pDevice->lock)
-       __acquires(&pDevice->lock)
+       u16 wIndex, u16 wLength, u8 *pbyBuffer)
 {
-       int ntStatus = 0;
-       int ii;
-
-    if (pDevice->Flags & fMP_DISCONNECTED)
-        return STATUS_FAILURE;
-
-    if (pDevice->Flags & fMP_CONTROL_READS)
-       return STATUS_FAILURE;
+       int ntStatus;
 
-       if (pDevice->pControlURB->hcpriv)
+       if (pDevice->Flags & fMP_DISCONNECTED)
                return STATUS_FAILURE;
 
        mutex_lock(&pDevice->usb_lock);
 
-       MP_SET_FLAG(pDevice, fMP_CONTROL_READS);
-
-       pDevice->sUsbCtlRequest.bRequestType = 0xC0;
-       pDevice->sUsbCtlRequest.bRequest = byRequest;
-       pDevice->sUsbCtlRequest.wValue = cpu_to_le16p(&wValue);
-       pDevice->sUsbCtlRequest.wIndex = cpu_to_le16p(&wIndex);
-       pDevice->sUsbCtlRequest.wLength = cpu_to_le16p(&wLength);
-       pDevice->pControlURB->transfer_flags |= URB_ASYNC_UNLINK;
-    pDevice->pControlURB->actual_length = 0;
-       usb_fill_control_urb(pDevice->pControlURB, pDevice->usb,
-                        usb_rcvctrlpipe(pDevice->usb , 0), (char *) &pDevice->sUsbCtlRequest,
-                        pbyBuffer, wLength, s_nsControlInUsbIoCompleteRead, pDevice);
-
-       ntStatus = usb_submit_urb(pDevice->pControlURB, GFP_ATOMIC);
-       if (ntStatus != 0) {
-               DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
-                       "control request submission failed: %d\n", ntStatus);
-               MP_CLEAR_FLAG(pDevice, fMP_CONTROL_READS);
-               mutex_unlock(&pDevice->usb_lock);
-               return STATUS_FAILURE;
-       }
-
-    for (ii = 0; ii <= USB_CTL_WAIT; ii ++) {
-
-       if (pDevice->Flags & fMP_CONTROL_READS)
-               mdelay(1);
-       else
-               break;
-
-       if (ii >= USB_CTL_WAIT) {
-               DBG_PRT(MSG_LEVEL_DEBUG,
-                       KERN_INFO "control rcv request submission timeout\n");
-            MP_CLEAR_FLAG(pDevice, fMP_CONTROL_READS);
-           mutex_unlock(&pDevice->usb_lock);
-            return STATUS_FAILURE;
-        }
-    }
+       ntStatus = usb_control_msg(pDevice->usb,
+               usb_rcvctrlpipe(pDevice->usb, 0), byRequest, 0xc0, wValue,
+                       wIndex, pbyBuffer, wLength, USB_CTL_WAIT);
 
        mutex_unlock(&pDevice->usb_lock);
 
-    return ntStatus;
-}
-
-/*
- * Description:
- *      Complete function of usb Control callback
- *
- * Parameters:
- *  In:
- *      pDevice     - Pointer to the adapter
- *
- *  Out:
- *      none
- *
- * Return Value: STATUS_INSUFFICIENT_RESOURCES or result of IoCallDriver
- *
- */
-
-static void s_nsControlInUsbIoCompleteRead(struct urb *urb)
-{
-       struct vnt_private *pDevice = (struct vnt_private *)urb->context;
-
-       switch (urb->status) {
-       case 0:
-               break;
-       case -EINPROGRESS:
-               DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl read urb status EINPROGRESS%d\n", urb->status);
-               break;
-       case -ENOENT:
-               DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl read urb status = ENOENT %d\n", urb->status);
-               break;
-       default:
-               DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl read urb status %d\n", urb->status);
-       }
+       if (ntStatus < (int)wLength)
+               return STATUS_FAILURE;
 
-    MP_CLEAR_FLAG(pDevice, fMP_CONTROL_READS);
+       return STATUS_SUCCESS;
 }
 
 /*