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Set the avalon read transfer latency to avoid sleeping when no data is returned after very short latency settings.

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This commit is contained in:
Con Kolivas 2013-06-04 23:31:26 +10:00
parent dd5788762f
commit 5e94a97223
1 changed files with 11 additions and 11 deletions
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22
driver-avalon.c
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@ -498,6 +498,16 @@ static void avalon_initialise(struct cgpu_info *avalon)
if (avalon->usbinfo.nodev)
return;
// Set latency
err = usb_transfer(avalon, FTDI_TYPE_OUT, FTDI_REQUEST_LATENCY,
AVALON_READ_TIMEOUT, interface, C_LATENCY);
applog(LOG_DEBUG, "%s%i: latency got err %d",
avalon->drv->name, avalon->device_id, err);
if (avalon->usbinfo.nodev)
return;
// Set data
err = usb_transfer(avalon, FTDI_TYPE_OUT, FTDI_REQUEST_DATA,
FTDI_VALUE_DATA_AVA, interface, C_SETDATA);
@ -745,7 +755,6 @@ static void *avalon_get_results(void *userdata)
RenameThread(threadname);
while (likely(!avalon->shutdown)) {
struct timeval tv_start, now, tdiff;
unsigned char buf[rsize];
int ret;
@ -767,20 +776,11 @@ static void *avalon_get_results(void *userdata)
offset = 0;
}
cgtime(&tv_start);
ret = avalon_read(avalon, buf, rsize, AVALON_READ_TIMEOUT,
C_AVALON_READ);
if (ret < 1) {
int us_delay;
cgtime(&now);
timersub(&now, &tv_start, &tdiff);
us_delay = AVALON_READ_TIMEOUT * 1000 - (tdiff.tv_usec);
if (us_delay > 0)
nusleep(us_delay);
if (ret < 1)
continue;
}
if (opt_debug) {
applog(LOG_DEBUG, "Avalon: get:");