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staging: comedi: drivers do not need to reset the async->cur_chan

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The comedi core calls comedi_buf_reset() before starting an async command
(*do_cmd) and after returning a subdevice to an idle state (*cancel).

The drivers do not need to reset the async->cur_chan in those functions.

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>
This commit is contained in:
H Hartley Sweeten
2014-10-30 11:21:54 -07:00
committed by Greg Kroah-Hartman
parent 453fd2b395
commit a7d3de75cf
9 changed files with 0 additions and 22 deletions
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2
drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
View File

@@ -629,7 +629,6 @@ static int apci3120_cancel(struct comedi_device *dev,
inb(dev->iobase + APCI3120_RESET_FIFO);
inw(dev->iobase + APCI3120_RD_STATUS);
devpriv->ui_AiActualScan = 0;
s->async->cur_chan = 0;
devpriv->ui_DmaActualBuffer = 0;
devpriv->ai_running = 0;
@@ -758,7 +757,6 @@ static int apci3120_cyclic_ai(int mode,
/* END JK 07.05.04: Comparison between WIN32 and Linux driver */
devpriv->ui_AiActualScan = 0;
s->async->cur_chan = 0;
devpriv->ui_DmaActualBuffer = 0;
/* value for timer2 minus -2 has to be done */

2
drivers/staging/comedi/drivers/adl_pci9118.c
View File

@@ -575,7 +575,6 @@ static int pci9118_ai_cancel(struct comedi_device *dev,
devpriv->ai_act_scan = 0;
devpriv->ai_act_dmapos = 0;
s->async->cur_chan = 0;
s->async->inttrig = NULL;
devpriv->ai_neverending = 0;
devpriv->dma_actbuf = 0;
@@ -1120,7 +1119,6 @@ static int pci9118_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
devpriv->ai_act_scan = 0;
devpriv->ai_act_dmapos = 0;
s->async->cur_chan = 0;
if (devpriv->usedma) {
Compute_and_setup_dma(dev, s);

2
drivers/staging/comedi/drivers/adv_pci1710.c
View File

@@ -731,7 +731,6 @@ static int pci171x_ai_cancel(struct comedi_device *dev,
}
devpriv->ai_act_scan = 0;
s->async->cur_chan = 0;
return 0;
}
@@ -931,7 +930,6 @@ static int pci171x_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
outb(0, dev->iobase + PCI171x_CLRINT);
devpriv->ai_act_scan = 0;
s->async->cur_chan = 0;
devpriv->CntrlReg &= Control_CNT0;
if ((cmd->flags & CMDF_WAKE_EOS) == 0)

1
drivers/staging/comedi/drivers/ni_atmio16d.c
View File

@@ -300,7 +300,6 @@ static int atmio16d_ai_cmd(struct comedi_device *dev,
* It is still uber-experimental */
reset_counters(dev);
s->async->cur_chan = 0;
/* check if scanning multiple channels */
if (cmd->chanlist_len < 2) {

1
drivers/staging/comedi/drivers/pcl812.c
View File

@@ -809,7 +809,6 @@ static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
devpriv->ai_act_scan = 0;
devpriv->ai_poll_ptr = 0;
s->async->cur_chan = 0;
/* don't we want wake up every scan? */
if (cmd->flags & CMDF_WAKE_EOS) {

1
drivers/staging/comedi/drivers/pcl816.c
View File

@@ -509,7 +509,6 @@ static int pcl816_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
udelay(1);
devpriv->ai_act_scan = 0;
s->async->cur_chan = 0;
devpriv->ai_cmd_running = 1;
devpriv->ai_poll_ptr = 0;
devpriv->ai_cmd_canceled = 0;

6
drivers/staging/comedi/drivers/usbdux.c
View File

@@ -698,9 +698,6 @@ static int usbdux_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
if (devpriv->ai_cmd_running)
goto ai_cmd_exit;
/* set current channel of the running acquisition to zero */
s->async->cur_chan = 0;
devpriv->dux_commands[1] = len;
for (i = 0; i < len; ++i) {
unsigned int chan = CR_CHAN(cmd->chanlist[i]);
@@ -996,9 +993,6 @@ static int usbdux_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
if (devpriv->ao_cmd_running)
goto ao_cmd_exit;
/* set current channel of the running acquisition to zero */
s->async->cur_chan = 0;
/* we count in steps of 1ms (125us) */
/* 125us mode not used yet */
if (0) { /* (devpriv->high_speed) */

2
drivers/staging/comedi/drivers/usbduxfast.c
View File

@@ -479,8 +479,6 @@ static int usbduxfast_ai_cmd(struct comedi_device *dev,
up(&devpriv->sem);
return -EBUSY;
}
/* set current channel of the running acquisition to zero */
s->async->cur_chan = 0;
/*
* ignore the first buffers from the device if there

5
drivers/staging/comedi/drivers/usbduxsigma.c
View File

@@ -689,8 +689,6 @@ static int usbduxsigma_ai_cmd(struct comedi_device *dev,
down(&devpriv->sem);
/* set current channel of the running acquisition to zero */
s->async->cur_chan = 0;
for (i = 0; i < len; i++) {
unsigned int chan = CR_CHAN(cmd->chanlist[i]);
@@ -988,9 +986,6 @@ static int usbduxsigma_ao_cmd(struct comedi_device *dev,
down(&devpriv->sem);
/* set current channel of the running acquisition to zero */
s->async->cur_chan = 0;
devpriv->ao_counter = devpriv->ao_timer;
if (cmd->start_src == TRIG_NOW) {