Use comedi_timeout() to wait for the analog input end-of-conversion.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/ii_pci20kc.c | 20 +++++++++-----------
1 file changed, 9 insertions(+), 11 deletions(-)
diff --git a/drivers/staging/comedi/drivers/ii_pci20kc.c b/drivers/staging/comedi/drivers/ii_pci20kc.c
index 8577778..3558ab3 100644
--- a/drivers/staging/comedi/drivers/ii_pci20kc.c
+++ b/drivers/staging/comedi/drivers/ii_pci20kc.c
@@ -190,20 +190,18 @@ static int ii20k_ao_insn_write(struct comedi_device *dev,
return insn->n;
}
-static int ii20k_ai_wait_eoc(struct comedi_device *dev,
- struct comedi_subdevice *s,
- int timeout)
+static int ii20k_ai_eoc(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned long context)
{
void __iomem *iobase = ii20k_module_iobase(dev, s);
unsigned char status;
- do {
- status = readb(iobase + II20K_AI_STATUS_REG);
- if ((status & II20K_AI_STATUS_INT) == 0)
- return 0;
- } while (timeout--);
-
- return -ETIME;
+ status = readb(iobase + II20K_AI_STATUS_REG);
+ if ((status & II20K_AI_STATUS_INT) == 0)
+ return 0;
+ return -EBUSY;
}
static void ii20k_ai_setup(struct comedi_device *dev,
@@ -263,7 +261,7 @@ static int ii20k_ai_insn_read(struct comedi_device *dev,
/* generate a software start convert signal */
readb(iobase + II20K_AI_PACER_RESET_REG);
- ret = ii20k_ai_wait_eoc(dev, s, 100);
+ ret = comedi_timeout(dev, s, insn, ii20k_ai_eoc, 0);
if (ret)
return ret;
--
1.8.5.2
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