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staging: comedi: dt9812: use comedi_to_usb_dev()

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Use the helper function to get a usb_device pointer from a
comedi_device pointer. This removes the need for also getting
the usb_interface pointer in some cases.

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 2013-05-20 14:27:48 -07:00 committed by Greg Kroah-Hartman
parent e23322e43a
commit 87d87adcd7
1 changed files with 5 additions and 10 deletions
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15
drivers/staging/comedi/drivers/dt9812.c
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@ -252,8 +252,7 @@ struct dt9812_private {
static int dt9812_read_info(struct comedi_device *dev,
int offset, void *buf, size_t buf_size)
{
struct usb_interface *intf = comedi_to_usb_interface(dev);
struct usb_device *usb = interface_to_usbdev(intf);
struct usb_device *usb = comedi_to_usb_dev(dev);
struct dt9812_private *devpriv = dev->private;
struct dt9812_usb_cmd cmd;
int count, ret;
@ -277,8 +276,7 @@ static int dt9812_read_multiple_registers(struct comedi_device *dev,
int reg_count, u8 *address,
u8 *value)
{
struct usb_interface *intf = comedi_to_usb_interface(dev);
struct usb_device *usb = interface_to_usbdev(intf);
struct usb_device *usb = comedi_to_usb_dev(dev);
struct dt9812_private *devpriv = dev->private;
struct dt9812_usb_cmd cmd;
int i, count, ret;
@ -302,8 +300,7 @@ static int dt9812_write_multiple_registers(struct comedi_device *dev,
int reg_count, u8 *address,
u8 *value)
{
struct usb_interface *intf = comedi_to_usb_interface(dev);
struct usb_device *usb = interface_to_usbdev(intf);
struct usb_device *usb = comedi_to_usb_dev(dev);
struct dt9812_private *devpriv = dev->private;
struct dt9812_usb_cmd cmd;
int i, count;
@ -324,8 +321,7 @@ static int dt9812_rmw_multiple_registers(struct comedi_device *dev,
int reg_count,
struct dt9812_rmw_byte *rmw)
{
struct usb_interface *intf = comedi_to_usb_interface(dev);
struct usb_device *usb = interface_to_usbdev(intf);
struct usb_device *usb = comedi_to_usb_dev(dev);
struct dt9812_private *devpriv = dev->private;
struct dt9812_usb_cmd cmd;
int i, count;
@ -706,8 +702,7 @@ static int dt9812_find_endpoints(struct comedi_device *dev)
static int dt9812_reset_device(struct comedi_device *dev)
{
struct usb_interface *intf = comedi_to_usb_interface(dev);
struct usb_device *usb = interface_to_usbdev(intf);
struct usb_device *usb = comedi_to_usb_dev(dev);
struct dt9812_private *devpriv = dev->private;
u32 serial;
u16 vendor;