The usb_device can be found when needed using the comedi_to_usb_dev()
helper. Use that instead the remove the back pointer from the private
data.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/usbdux.c | 39 ++++++++++++++++-----------------
1 file changed, 19 insertions(+), 20 deletions(-)
diff --git a/drivers/staging/comedi/drivers/usbdux.c b/drivers/staging/comedi/drivers/usbdux.c
index c3fbfdc..8841944 100644
--- a/drivers/staging/comedi/drivers/usbdux.c
+++ b/drivers/staging/comedi/drivers/usbdux.c
@@ -202,8 +202,6 @@ static const struct comedi_lrange range_usbdux_ao_range = {
};
struct usbdux_private {
- /* pointer to the usb-device */
- struct usb_device *usbdev;
/* actual number of in-buffers */
int num_in_buffers;
/* actual number of out-buffers */
@@ -384,7 +382,7 @@ static void usbduxsub_ai_isoc_irq(struct urb *urb)
return;
}
- urb->dev = devpriv->usbdev;
+ urb->dev = comedi_to_usb_dev(dev);
/* resubmit the urb */
err = usb_submit_urb(urb, GFP_ATOMIC);
@@ -587,7 +585,7 @@ static void usbduxsub_ao_isoc_irq(struct urb *urb)
}
}
urb->transfer_buffer_length = SIZEOUTBUF;
- urb->dev = devpriv->usbdev;
+ urb->dev = comedi_to_usb_dev(dev);
urb->status = 0;
if (devpriv->ao_cmd_running) {
if (devpriv->high_speed)
@@ -622,8 +620,7 @@ static int usbdux_firmware_upload(struct comedi_device *dev,
const u8 *data, size_t size,
unsigned long context)
{
- struct usbdux_private *usbduxsub = dev->private;
- struct usb_device *usb = usbduxsub->usbdev;
+ struct usb_device *usb = comedi_to_usb_dev(dev);
uint8_t *buf;
uint8_t *tmp;
int ret;
@@ -693,6 +690,7 @@ done:
static int usbduxsub_submit_inurbs(struct comedi_device *dev)
{
+ struct usb_device *usb = comedi_to_usb_dev(dev);
struct usbdux_private *devpriv = dev->private;
struct urb *urb;
int ret;
@@ -705,7 +703,7 @@ static int usbduxsub_submit_inurbs(struct comedi_device *dev)
/* in case of a resubmission after an unlink... */
urb->interval = devpriv->ai_interval;
urb->context = dev;
- urb->dev = devpriv->usbdev;
+ urb->dev = usb;
urb->status = 0;
urb->transfer_flags = URB_ISO_ASAP;
@@ -718,6 +716,7 @@ static int usbduxsub_submit_inurbs(struct comedi_device *dev)
static int usbduxsub_submit_outurbs(struct comedi_device *dev)
{
+ struct usb_device *usb = comedi_to_usb_dev(dev);
struct usbdux_private *devpriv = dev->private;
struct urb *urb;
int ret;
@@ -728,7 +727,7 @@ static int usbduxsub_submit_outurbs(struct comedi_device *dev)
/* in case of a resubmission after an unlink... */
urb->context = dev;
- urb->dev = devpriv->usbdev;
+ urb->dev = usb;
urb->status = 0;
urb->transfer_flags = URB_ISO_ASAP;
@@ -849,8 +848,8 @@ static int8_t create_adc_command(unsigned int chan, int range)
static int send_dux_commands(struct comedi_device *dev, int cmd_type)
{
+ struct usb_device *usb = comedi_to_usb_dev(dev);
struct usbdux_private *devpriv = dev->private;
- struct usb_device *usb = devpriv->usbdev;
int nsent;
devpriv->dux_commands[0] = cmd_type;
@@ -862,8 +861,8 @@ static int send_dux_commands(struct comedi_device *dev, int cmd_type)
static int receive_dux_commands(struct comedi_device *dev, int command)
{
+ struct usb_device *usb = comedi_to_usb_dev(dev);
struct usbdux_private *devpriv = dev->private;
- struct usb_device *usb = devpriv->usbdev;
int ret;
int nrec;
int i;
@@ -1520,7 +1519,7 @@ static void usbduxsub_pwm_irq(struct urb *urb)
return;
urb->transfer_buffer_length = devpriv->size_pwm_buf;
- urb->dev = devpriv->usbdev;
+ urb->dev = comedi_to_usb_dev(dev);
urb->status = 0;
if (devpriv->pwm_cmd_running) {
ret = usb_submit_urb(urb, GFP_ATOMIC);
@@ -1540,12 +1539,12 @@ static void usbduxsub_pwm_irq(struct urb *urb)
static int usbduxsub_submit_pwm_urbs(struct comedi_device *dev)
{
+ struct usb_device *usb = comedi_to_usb_dev(dev);
struct usbdux_private *devpriv = dev->private;
struct urb *urb = devpriv->urb_pwm;
/* in case of a resubmission after an unlink... */
- usb_fill_bulk_urb(urb, devpriv->usbdev,
- usb_sndbulkpipe(devpriv->usbdev, PWM_EP),
+ usb_fill_bulk_urb(urb, usb, usb_sndbulkpipe(usb, PWM_EP),
urb->transfer_buffer,
devpriv->size_pwm_buf,
usbduxsub_pwm_irq,
@@ -1731,6 +1730,7 @@ static int usbdux_pwm_config(struct comedi_device *dev,
static int usbdux_alloc_usb_buffers(struct comedi_device *dev)
{
+ struct usb_device *usb = comedi_to_usb_dev(dev);
struct usbdux_private *devpriv = dev->private;
struct urb *urb;
int i;
@@ -1773,11 +1773,11 @@ static int usbdux_alloc_usb_buffers(struct comedi_device *dev)
return -ENOMEM;
devpriv->urb_in[i] = urb;
- urb->dev = devpriv->usbdev;
+ urb->dev = usb;
/* will be filled later with a pointer to the comedi-device */
/* and ONLY then the urb should be submitted */
urb->context = NULL;
- urb->pipe = usb_rcvisocpipe(devpriv->usbdev, ISOINEP);
+ urb->pipe = usb_rcvisocpipe(usb, ISOINEP);
urb->transfer_flags = URB_ISO_ASAP;
urb->transfer_buffer = kzalloc(SIZEINBUF, GFP_KERNEL);
if (!urb->transfer_buffer)
@@ -1803,11 +1803,11 @@ static int usbdux_alloc_usb_buffers(struct comedi_device *dev)
return -ENOMEM;
devpriv->urb_out[i] = urb;
- urb->dev = devpriv->usbdev;
+ urb->dev = usb;
/* will be filled later with a pointer to the comedi-device */
/* and ONLY then the urb should be submitted */
urb->context = NULL;
- urb->pipe = usb_sndisocpipe(devpriv->usbdev, ISOOUTEP);
+ urb->pipe = usb_sndisocpipe(usb, ISOOUTEP);
urb->transfer_flags = URB_ISO_ASAP;
urb->transfer_buffer = kzalloc(SIZEOUTBUF, GFP_KERNEL);
if (!urb->transfer_buffer)
@@ -1896,11 +1896,10 @@ static int usbdux_auto_attach(struct comedi_device *dev,
sema_init(&devpriv->sem, 1);
- devpriv->usbdev = usb;
devpriv->ifnum = intf->altsetting->desc.bInterfaceNumber;
usb_set_intfdata(intf, devpriv);
- devpriv->high_speed = (devpriv->usbdev->speed == USB_SPEED_HIGH);
+ devpriv->high_speed = (usb->speed == USB_SPEED_HIGH);
if (devpriv->high_speed) {
devpriv->num_in_buffers = NUMOFINBUFFERSHIGH;
devpriv->num_out_buffers = NUMOFOUTBUFFERSHIGH;
@@ -1915,7 +1914,7 @@ 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(devpriv->usbdev, devpriv->ifnum, 3);
+ ret = usb_set_interface(usb, devpriv->ifnum, 3);
if (ret < 0) {
dev_err(dev->class_dev,
"could not set alternate setting 3 in high speed\n");
--
1.8.3.2
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