Removed a buffer overflow routine again. The buffer overflow can

only be detected in the firmware when 3 out of 4 buffers are full.
Thus, the condition that all 4 buffers are full gives already
an buffer overflow.

diff --git a/comedi/drivers/usbduxfast.c b/comedi/drivers/usbduxfast.c
index e754cffe20d91cc9ca05c195cdcbfd30958e2b6d..9fb73bc6f7093addd618b8c585a4d385813257ef 100644 (file)
--- a/comedi/drivers/usbduxfast.c
+++ b/comedi/drivers/usbduxfast.c
@@ -125,9 +125,6 @@ Status: testing
 // It's quad buffering and we have to ignore 4 packets.
 #define PACKETS_TO_IGNORE 4
 
-// Buffer overflow in the FX2 aborts the transmission
-#define BUFFER_OVERFL_ABORTS 1
-
 /////////////////////////////////////////////
 // comedi constants
 static comedi_lrange range_usbduxfast_ai_range = { 2, {
@@ -406,21 +403,6 @@ static void usbduxfastsub_ai_Irq(struct urb *urb, struct pt_regs *regs)
 
        p=urb->transfer_buffer;
        if (!this_usbduxfastsub->ignore) {
-               if (*p==0xffff) {
-                       // buffer overflow in the middle of the data stream
-                       // let's make it a real error
-                       printk("comedi%d: usbduxfast: buffer overflow in the usbduxfast box.\n",
-                              this_usbduxfastsub->comedidev->minor);
-#ifdef BUFFER_OVERFL_ABORTS
-                       s->async->events |= COMEDI_CB_EOA;
-                       s->async->events |= COMEDI_CB_ERROR;
-                       comedi_event(this_usbduxfastsub->comedidev, 
-                                    s,
-                                    s->async->events);
-                       usbduxfast_ai_stop(this_usbduxfastsub,0);
-                       return;
-#endif
-               }
                if (!(this_usbduxfastsub->ai_continous)) {
                        // not continous, fixed number of samples
                        n=urb->actual_length/sizeof(uint16_t);