Minor - USB OHCI interrupt queue should be one larger.

One of the entries in the queue can't be used, so the total queue size
needs to be one larger than it currently is.

diff --git a/src/usb-ohci.c b/src/usb-ohci.c
index 28bbdc664c4744b3b86cb473458f02603641a3c7..0048e2b48dc586db08dd4ae3d251ee2042ebf182 100644 (file)
--- a/src/usb-ohci.c
+++ b/src/usb-ohci.c
@@ -429,7 +429,7 @@ ohci_alloc_intr_pipe(struct usb_pipe *dummy, int frameexp)
     int devaddr = dummy->devaddr | (dummy->ep << 7);
     // Determine number of entries needed for 2 timer ticks.
     int ms = 1<<frameexp;
-    int count = DIV_ROUND_UP(PIT_TICK_INTERVAL * 1000 * 2, PIT_TICK_RATE * ms);
+    int count = DIV_ROUND_UP(PIT_TICK_INTERVAL * 1000 * 2, PIT_TICK_RATE * ms)+1;
     struct ohci_pipe *pipe = malloc_low(sizeof(*pipe));
     struct ohci_td *tds = malloc_low(sizeof(*tds) * count);
     void *data = malloc_low(maxpacket * count);