Initialize this variable with then_ai_urbs and n_ao_urbs in the
attach. Then usbduxsigma_alloc_usb_buffers() can just check the
variable to determine if the urb needs to be allocated.
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/usbduxsigma.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/staging/comedi/drivers/usbduxsigma.c
b/drivers/staging/comedi/drivers/usbduxsigma.c
index df56395..68a3cd2 100644
--- a/drivers/staging/comedi/drivers/usbduxsigma.c
+++ b/drivers/staging/comedi/drivers/usbduxsigma.c
@@ -1600,19 +1600,16 @@ static int usbduxsigma_alloc_usb_buffers(struct
comedi_device *dev)
urb->interval = 1; /* frames */
}
- if (devpriv->high_speed) {
- /* max bulk ep size in high speed */
- devpriv->pwm_buf_sz = 512;
+ if (devpriv->pwm_buf_sz) {
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb)
return -ENOMEM;
devpriv->pwm_urb = urb;
- urb->transfer_buffer = kzalloc(devpriv->pwm_buf_sz, GFP_KERNEL);
+
+ urb->transfer_buffer = kzalloc(devpriv->pwm_buf_sz,
+ GFP_KERNEL);
if (!urb->transfer_buffer)
return -ENOMEM;
- } else {
- devpriv->pwm_urb = NULL;
- devpriv->pwm_buf_sz = 0;
}
return 0;
@@ -1687,9 +1684,11 @@ static int usbduxsigma_auto_attach(struct comedi_device
*dev,
if (devpriv->high_speed) {
devpriv->n_ai_urbs = NUMOFINBUFFERSHIGH;
devpriv->n_ao_urbs = NUMOFOUTBUFFERSHIGH;
+ devpriv->pwm_buf_sz = 512;
} else {
devpriv->n_ai_urbs = NUMOFINBUFFERSFULL;
devpriv->n_ao_urbs = NUMOFOUTBUFFERSFULL;
+ devpriv->pwm_buf_sz = 0;
}
ret = usbduxsigma_alloc_usb_buffers(dev);
--
1.8.3.2
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