The two step process to transfer the ai samples in pci1710_handle_fifo() doesn't
make any sense. If the async buffer does not have enough room for the samples
the
core will set the async event COMEDI_CB_OVERFLOW which will cause the async
command
to cancel. Splitting the transfer doesn't add any value.
Transfer all the samples in one step to simplify the code.
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/adv_pci1710.c | 15 ++-------------
1 file changed, 2 insertions(+), 13 deletions(-)
diff --git a/drivers/staging/comedi/drivers/adv_pci1710.c
b/drivers/staging/comedi/drivers/adv_pci1710.c
index 0a50053..76075db 100644
--- a/drivers/staging/comedi/drivers/adv_pci1710.c
+++ b/drivers/staging/comedi/drivers/adv_pci1710.c
@@ -720,7 +720,6 @@ static void pci1710_handle_fifo(struct comedi_device *dev,
{
struct pci1710_private *devpriv = dev->private;
struct comedi_cmd *cmd = &s->async->cmd;
- unsigned int nsamples;
unsigned int m;
m = inw(dev->iobase + PCI171x_STATUS);
@@ -736,18 +735,8 @@ static void pci1710_handle_fifo(struct comedi_device *dev,
return;
}
- nsamples = devpriv->max_samples;
- if (comedi_samples_to_bytes(s, nsamples) >= s->async->prealloc_bufsz) {
- m = comedi_bytes_to_samples(s, s->async->prealloc_bufsz);
- if (move_block_from_fifo(dev, s, m))
- return;
- nsamples -= m;
- }
-
- if (nsamples) {
- if (move_block_from_fifo(dev, s, nsamples))
- return;
- }
+ if (move_block_from_fifo(dev, s, devpriv->max_samples))
+ return;
if (cmd->stop_src == TRIG_COUNT &&
s->async->scans_done >= cmd->stop_arg) {
--
2.0.3
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