fix delays

diff --git a/comedi/drivers/rti800.c b/comedi/drivers/rti800.c
index b5ffc0640ef3c64a60e5eb89aa9ec42bf0e4d3fb..af8065186d3c29a53b727425c9404388b284d069 100644 (file)
--- a/comedi/drivers/rti800.c
+++ b/comedi/drivers/rti800.c
@@ -163,7 +163,7 @@ typedef struct {
 
 #define devpriv ((rti800_private *)dev->private)
 
-#define RTI800_TIMEOUT 10
+#define RTI800_TIMEOUT 100
 
 static irqreturn_t rti800_interrupt(int irq, void *dev, struct pt_regs *regs)
 {
@@ -186,9 +186,16 @@ static int rti800_ai_insn_read(comedi_device *dev,comedi_subdevice *s,
 
        outb(chan | (gain << 5), dev->iobase + RTI800_MUXGAIN);
 
+       /* without a delay here, you the RTI_OVERRUN bit
+        * gets set, and you will have an error.  Not
+        * sure if this is a long enough delay though.
+        * comedi_udelay( gaindelay[ gain ] ) definitely
+        * works */
+       comedi_udelay(1);
+
        for(i=0;i<insn->n;i++){
                outb(0, dev->iobase + RTI800_CONVERT);
-               for (t = RTI800_TIMEOUT; t; t--) {
+               for (t = RTI800_TIMEOUT; t; t--) {
                        status=inb(dev->iobase+RTI800_CSR);
                        if(status & RTI800_OVERRUN){
                                rt_printk("rti800: a/d overrun\n");
@@ -196,7 +203,7 @@ static int rti800_ai_insn_read(comedi_device *dev,comedi_subdevice *s,
                                return -EIO;
                        }
                        if (status & RTI800_DONE)break;
-                       //comedi_udelay(8);
+                       comedi_udelay(1);
                }
                if(t == 0){
                        rt_printk("rti800: timeout\n");