staging: comedi: usbdux: tidy up usbduxsub_submit_inurbs()

Pass the comedi_device pointer (the urb context) to this function
instead of the private data pointer.

Use a local variable for the urb pointers that are setup and submitted.

Remove the sanity check of the private data. This function can only
get called if the allocation was successful during the attach.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/usbdux.c b/drivers/staging/comedi/drivers/usbdux.c
index 7b2e072aad1b5e50d820f516281f47b2931c23d2..4d4ce3f184b7f1a84c7fd71c3753c86e903a20e1 100644 (file)
--- a/drivers/staging/comedi/drivers/usbdux.c
+++ b/drivers/staging/comedi/drivers/usbdux.c
@@ -698,24 +698,27 @@ done:
        return ret;
 }
 
-static int usbduxsub_submit_inurbs(struct usbdux_private *usbduxsub)
+static int usbduxsub_submit_inurbs(struct comedi_device *dev)
 {
-       int i, err_flag;
-
-       if (!usbduxsub)
-               return -EFAULT;
+       struct usbdux_private *devpriv = dev->private;
+       struct urb *urb;
+       int ret;
+       int i;
 
        /* Submit all URBs and start the transfer on the bus */
-       for (i = 0; i < usbduxsub->num_in_buffers; i++) {
+       for (i = 0; i < devpriv->num_in_buffers; i++) {
+               urb = devpriv->urb_in[i];
+
                /* in case of a resubmission after an unlink... */
-               usbduxsub->urb_in[i]->interval = usbduxsub->ai_interval;
-               usbduxsub->urb_in[i]->context = usbduxsub->comedidev;
-               usbduxsub->urb_in[i]->dev = usbduxsub->usbdev;
-               usbduxsub->urb_in[i]->status = 0;
-               usbduxsub->urb_in[i]->transfer_flags = URB_ISO_ASAP;
-               err_flag = usb_submit_urb(usbduxsub->urb_in[i], GFP_ATOMIC);
-               if (err_flag)
-                       return err_flag;
+               urb->interval = devpriv->ai_interval;
+               urb->context = dev;
+               urb->dev = devpriv->usbdev;
+               urb->status = 0;
+               urb->transfer_flags = URB_ISO_ASAP;
+
+               ret = usb_submit_urb(urb, GFP_ATOMIC);
+               if (ret)
+                       return ret;
        }
        return 0;
 }
@@ -899,7 +902,7 @@ static int usbdux_ai_inttrig(struct comedi_device *dev,
        }
        if (!(this_usbduxsub->ai_cmd_running)) {
                this_usbduxsub->ai_cmd_running = 1;
-               ret = usbduxsub_submit_inurbs(this_usbduxsub);
+               ret = usbduxsub_submit_inurbs(dev);
                if (ret < 0) {
                        this_usbduxsub->ai_cmd_running = 0;
                        up(&this_usbduxsub->sem);
@@ -986,7 +989,7 @@ static int usbdux_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
        if (cmd->start_src == TRIG_NOW) {
                /* enable this acquisition operation */
                this_usbduxsub->ai_cmd_running = 1;
-               ret = usbduxsub_submit_inurbs(this_usbduxsub);
+               ret = usbduxsub_submit_inurbs(dev);
                if (ret < 0) {
                        this_usbduxsub->ai_cmd_running = 0;
                        /* fixme: unlink here?? */