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staging: comedi: usbdux: use 'cmd' pointer in usbduxsub_ai_isoc_irq()

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Use the 'cmd' pointer to access the chanlist instead of getting to it
using the comedi_subdevice pointer.

Remove the unneeded 'n' local variable, this is just the cmd->chanlist_len.

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 2014-05-27 10:30:43 -07:00 committed by Greg Kroah-Hartman
parent 33938a9dfa
commit a49b45fb49
1 changed files with 3 additions and 4 deletions
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7
drivers/staging/comedi/drivers/usbdux.c
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@ -264,7 +264,7 @@ static void usbduxsub_ai_isoc_irq(struct urb *urb)
struct comedi_subdevice *s = dev->read_subdev;
struct usbdux_private *devpriv = dev->private;
struct comedi_cmd *cmd = &s->async->cmd;
int i, err, n;
int i, err;
/* first we test if something unusual has just happened */
switch (urb->status) {
@ -361,9 +361,8 @@ static void usbduxsub_ai_isoc_irq(struct urb *urb)
}
}
/* get the data from the USB bus and hand it over to comedi */
n = s->async->cmd.chanlist_len;
for (i = 0; i < n; i++) {
unsigned int range = CR_RANGE(s->async->cmd.chanlist[i]);
for (i = 0; i < cmd->chanlist_len; i++) {
unsigned int range = CR_RANGE(cmd->chanlist[i]);
uint16_t val = le16_to_cpu(devpriv->in_buf[i]);
/* bipolar data is two's-complement */