From: Kevin O'Connor <kevin@koconnor.net>
Date: Sun, 28 Feb 2010 07:36:32 +0000 (-0500)
Subject: Minor - USB OHCI interrupt queue should be one larger.
X-Git-Tag: rel-0.6.0~21
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=bfe7ca72b816623355a5f4b809741c52120654a4;p=seabios.git

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 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);