staging: comedi: pcl812: remove 'ai_scans' from private data

This member of the private data is just a copy of the cmd->stop_arg.

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

diff --git a/drivers/staging/comedi/drivers/pcl812.c b/drivers/staging/comedi/drivers/pcl812.c
index ec6d37d..9dcd968 100644 (file)
--- a/drivers/staging/comedi/drivers/pcl812.c
+++ b/drivers/staging/comedi/drivers/pcl812.c
@@ -519,7 +519,6 @@ struct pcl812_private {
        unsigned char ai_eos;   /*  1=EOS wake up */
        unsigned char ai_dma;   /*  =1 we use DMA */
        unsigned int ai_poll_ptr;       /*  how many sampes transfer poll */
-       unsigned int ai_scans;  /*  len of scanlist */
        unsigned int ai_act_scan;       /*  how many scans we finished */
        unsigned int ai_chanlist[MAX_CHANLIST_LEN];     /*  our copy of channel/range list */
        unsigned int ai_n_chan; /*  how many channels is measured */
@@ -792,13 +791,10 @@ static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 
        devpriv->ai_flags = cmd->flags;
        devpriv->ai_data_len = s->async->prealloc_bufsz;
-       if (cmd->stop_src == TRIG_COUNT) {
-               devpriv->ai_scans = cmd->stop_arg;
+       if (cmd->stop_src == TRIG_COUNT)
                devpriv->ai_neverending = 0;
-       } else {
-               devpriv->ai_scans = 0;
+       else
                devpriv->ai_neverending = 1;
-       }
 
        devpriv->ai_act_scan = 0;
        devpriv->ai_poll_ptr = 0;
@@ -835,7 +831,7 @@ static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
                        } else {
                                /*  how many samples we must transfer? */
                                bytes = devpriv->ai_n_chan *
-                                       devpriv->ai_scans * sizeof(short);
+                                       cmd->stop_arg * sizeof(short);
 
                                /*  how many DMA pages we must fill */
                                devpriv->dma_runs_to_end =
@@ -892,6 +888,7 @@ static irqreturn_t interrupt_pcl812_ai_int(int irq, void *d)
        struct comedi_device *dev = d;
        struct pcl812_private *devpriv = dev->private;
        struct comedi_subdevice *s = dev->read_subdev;
+       struct comedi_cmd *cmd = &s->async->cmd;
        unsigned int next_chan;
 
        s->async->events = 0;
@@ -940,7 +937,7 @@ static irqreturn_t interrupt_pcl812_ai_int(int irq, void *d)
                devpriv->ai_act_scan++;
                if (!(devpriv->ai_neverending))
                                                        /* all data sampled */
-                       if (devpriv->ai_act_scan >= devpriv->ai_scans) {
+                       if (devpriv->ai_act_scan >= cmd->stop_arg) {
                                pcl812_ai_cancel(dev, s);
                                s->async->events |= COMEDI_CB_EOA;
                        }
@@ -959,6 +956,7 @@ static void transfer_from_dma_buf(struct comedi_device *dev,
                                  unsigned int bufptr, unsigned int len)
 {
        struct pcl812_private *devpriv = dev->private;
+       struct comedi_cmd *cmd = &s->async->cmd;
        unsigned int i;
 
        s->async->events = 0;
@@ -972,7 +970,7 @@ static void transfer_from_dma_buf(struct comedi_device *dev,
                        devpriv->ai_act_scan++;
                        if (!devpriv->ai_neverending)
                                                        /* all data sampled */
-                               if (devpriv->ai_act_scan >= devpriv->ai_scans) {
+                               if (devpriv->ai_act_scan >= cmd->stop_arg) {
                                        pcl812_ai_cancel(dev, s);
                                        s->async->events |= COMEDI_CB_EOA;
                                        break;