[OpenBIOS] r146 - openbios-devel/drivers

[svn at openbios.org]

Author: blueswirl
Date: 2007-05-17 21:07:21 +0200 (Thu, 17 May 2007)
New Revision: 146

Modified:
   openbios-devel/drivers/iommu.c
Log:
Fix overallocation

Modified: openbios-devel/drivers/iommu.c
===================================================================
--- openbios-devel/drivers/iommu.c	2007-05-07 20:02:01 UTC (rev 145)
+++ openbios-devel/drivers/iommu.c	2007-05-17 19:07:21 UTC (rev 146)
@@ -194,7 +194,7 @@
     unsigned int mva;
 
     off = pa & (PAGE_SIZE - 1);
-    npages = (off + size + (PAGE_SIZE - 1)) / PAGE_SIZE;
+    npages = (off + (size - 1) + (PAGE_SIZE - 1)) / PAGE_SIZE;
     pa &= ~(PAGE_SIZE - 1);
 
     va = mem_alloc(&cio, npages * PAGE_SIZE, PAGE_SIZE);