The ADC conversions are enabled and the FIFO is flushed by daq700_ai_config()
when the driver is initially attached. There is no reason to repeat the ADC
enable and flush the FIFO before each sample read in the (*insn_read).
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregk@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/ni_daq_700.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/staging/comedi/drivers/ni_daq_700.c b/drivers/staging/comedi/drivers/ni_daq_700.c
index 5e472cb..4d5cb5a 100644
--- a/drivers/staging/comedi/drivers/ni_daq_700.c
+++ b/drivers/staging/comedi/drivers/ni_daq_700.c
@@ -169,11 +169,7 @@ static int daq700_ai_rinsn(struct comedi_device *dev,
/* convert n samples */
for (n = 0; n < insn->n; n++) {
/* trigger conversion with out0 L to H */
- outb(0x00, dev->iobase + CMD_R2); /* enable ADC conversions */
outb(0x30, dev->iobase + CMO_R); /* mode 0 out0 L, from H */
- outb(0x00, dev->iobase + ADCLEAR_R); /* clear the ADC FIFO */
- /* read 16bit junk from FIFO to clear */
- inw(dev->iobase + ADFIFO_R);
/* mode 1 out0 H, L to H, start conversion */
outb(0x32, dev->iobase + CMO_R);
--
1.9.3
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