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tools/lib/atusb-common.c (atusb_interrupt_wait): don't try to pull more irqs

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ausb_bulk_read may lose data when timing out. We therefore try to
minimize the number of times we time out. Reading until no more
interrupts arrive may have looked like a good idea, but it just
causes trouble for now.
This commit is contained in:
Werner Almesberger 2011-06-20 22:58:46 -03:00
parent cb20c55231
commit f8f2f890d9
1 changed files with 3 additions and 6 deletions
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9
tools/lib/atusb-common.c
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@ -213,17 +213,14 @@ int atusb_interrupt_wait(void *handle, int timeout_ms)
if (irq)
timeout_ms = 1;
while (1) {
res = usb_bulk_read(dsc->dev, 1,
(char *) &buf, sizeof(buf), timeout_ms);
if (res == -ETIMEDOUT)
break;
res = usb_bulk_read(dsc->dev, 1,
(char *) &buf, sizeof(buf), timeout_ms);
if (res != -ETIMEDOUT) {
if (res < 0) {
fprintf(stderr, "usb_bulk_read: %d\n", res);
dsc->error = 1;
return 0; /* handle this via atrf_error */
}
timeout_ms = 1;
for (i = 0; i != res; i++)
irq |= buf[i];
}