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staging: comedi: usbdux: remove 'ifnum' from the private data

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The 'ifnum' is only used during the attach of the device. Remove it
from the private data.

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>
This commit is contained in:
H Hartley Sweeten
2013-07-24 14:16:44 -07:00
committed by Greg Kroah-Hartman
parent 0b20d613af
commit 903f4fde80
1 changed files with 2 additions and 4 deletions
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6
drivers/staging/comedi/drivers/usbdux.c
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@@ -223,8 +223,6 @@ struct usbdux_private {
int16_t *insn_buffer;
/* output buffer for single DA outputs */
int16_t *out_buffer;
/* interface number */
int ifnum;
/* is it USB_SPEED_HIGH or not? */
short int high_speed;
/* asynchronous command is running */
@@ -1896,7 +1894,6 @@ static int usbdux_auto_attach(struct comedi_device *dev,
sema_init(&devpriv->sem, 1);
devpriv->ifnum = intf->altsetting->desc.bInterfaceNumber;
usb_set_intfdata(intf, devpriv);
devpriv->high_speed = (usb->speed == USB_SPEED_HIGH);
@@ -1914,7 +1911,8 @@ static int usbdux_auto_attach(struct comedi_device *dev,
return ret;
/* setting to alternate setting 3: enabling iso ep and bulk ep. */
ret = usb_set_interface(usb, devpriv->ifnum, 3);
ret = usb_set_interface(usb, intf->altsetting->desc.bInterfaceNumber,
3);
if (ret < 0) {
dev_err(dev->class_dev,
"could not set alternate setting 3 in high speed\n");