From bfe7ca72b816623355a5f4b809741c52120654a4 Mon Sep 17 00:00:00 2001
From: Kevin O'Connor <kevin@koconnor.net>
Date: Sun, 28 Feb 2010 02:36:32 -0500
Subject: [PATCH] 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.
---
 src/usb-ohci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/usb-ohci.c b/src/usb-ohci.c
index 28bbdc6..0048e2b 100644
--- 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);
-- 
2.25.1