The private data 'devpriv' is allocated in the (*auto_attach) before
the subdevices are initialized and the (*auto_attach) has to complete
successfully before the core will call any of the subdevice operations.
Because of this the (!devpriv) checks in the subdevice code can never
fail. Remove them.
Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/staging/comedi/drivers/usbduxfast.c | 12 ------------
1 file changed, 12 deletions(-)
diff --git a/drivers/staging/comedi/drivers/usbduxfast.c
b/drivers/staging/comedi/drivers/usbduxfast.c
index a8635b1..cb221e7 100644
--- a/drivers/staging/comedi/drivers/usbduxfast.c
+++ b/drivers/staging/comedi/drivers/usbduxfast.c
@@ -223,9 +223,6 @@ static int usbduxfast_ai_cancel(struct comedi_device *dev,
struct usbduxfast_private *devpriv = dev->private;
int ret;
- if (!devpriv)
- return -EFAULT;
-
down(&devpriv->sem);
ret = usbduxfast_ai_stop(dev, 1);
up(&devpriv->sem);
@@ -317,9 +314,6 @@ static int usbduxfast_submit_urb(struct comedi_device *dev)
struct usbduxfast_private *devpriv = dev->private;
int ret;
- if (!devpriv)
- return -EFAULT;
-
usb_fill_bulk_urb(devpriv->urb, usb, usb_rcvbulkpipe(usb, BULKINEP),
devpriv->inbuf, SIZEINBUF,
usbduxfast_ai_interrupt, dev);
@@ -466,9 +460,6 @@ static int usbduxfast_ai_inttrig(struct comedi_device *dev,
struct comedi_cmd *cmd = &s->async->cmd;
int ret;
- if (!devpriv)
- return -EFAULT;
-
if (trig_num != cmd->start_arg)
return -EINVAL;
@@ -501,9 +492,6 @@ static int usbduxfast_ai_cmd(struct comedi_device *dev,
int result;
long steps, steps_tmp;
- if (!devpriv)
- return -EFAULT;
-
down(&devpriv->sem);
if (devpriv->ai_cmd_running) {
dev_err(dev->class_dev, "ai_cmd not possible\n");
--
2.4.3
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