From eee7d9e9ef711abda2482af2d6b15d76e34b8db5 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Wed, 24 Jul 2013 14:18:36 -0700 Subject: [PATCH] staging: comedi: usbdux: tidy up usbdux_ao_cancel() Rename the local variable used for the private data pointer to the comedi "norm". Remove the unnecessary sanity check of the private data pointer. This function can only be called is the private data was allocated during the attach. Signed-off-by: H Hartley Sweeten Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/usbdux.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/drivers/staging/comedi/drivers/usbdux.c b/drivers/staging/comedi/drivers/usbdux.c index 1f6750950a5d..d0d683bc83c2 100644 --- a/drivers/staging/comedi/drivers/usbdux.c +++ b/drivers/staging/comedi/drivers/usbdux.c @@ -449,22 +449,19 @@ static int usbdux_ao_stop(struct comedi_device *dev, int do_unlink) return ret; } -/* force unlink, is called by comedi */ static int usbdux_ao_cancel(struct comedi_device *dev, struct comedi_subdevice *s) { - struct usbdux_private *this_usbduxsub = dev->private; - int res = 0; - - if (!this_usbduxsub) - return -EFAULT; + struct usbdux_private *devpriv = dev->private; + int ret = 0; /* prevent other CPUs from submitting a command just now */ - down(&this_usbduxsub->sem); + down(&devpriv->sem); /* unlink only if it is really running */ - res = usbdux_ao_stop(dev, this_usbduxsub->ao_cmd_running); - up(&this_usbduxsub->sem); - return res; + ret = usbdux_ao_stop(dev, devpriv->ao_cmd_running); + up(&devpriv->sem); + + return ret; } static void usbduxsub_ao_isoc_irq(struct urb *urb) -- 2.39.2