From 0b20d613afd0e1ba394c2b209a5f459c5f43e1ff Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Wed, 24 Jul 2013 14:16:24 -0700 Subject: [PATCH] staging: comedi: usbdux: remove usb_device back pointer from private data 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 Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- 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 c3fbfdc6fc5c..88419444497f 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"); -- 2.30.2