[OpenBIOS] r141 - openbios-devel/drivers

[svn at openbios.org]

Author: blueswirl
Date: 2007-05-05 20:34:01 +0200 (Sat, 05 May 2007)
New Revision: 141

Modified:
   openbios-devel/drivers/iommu.c
Log:
More obviously alarming return values for find_pte

Modified: openbios-devel/drivers/iommu.c
===================================================================
--- openbios-devel/drivers/iommu.c	2007-05-05 18:32:35 UTC (rev 140)
+++ openbios-devel/drivers/iommu.c	2007-05-05 18:34:01 UTC (rev 141)
@@ -124,12 +124,12 @@
             p = mem_zalloc(&cmem, SRMMU_PTRS_PER_PMD * sizeof(int),
                            SRMMU_PTRS_PER_PMD * sizeof(int));
             if (p == 0)
-                return 1;
+                return -1;
             pte = SRMMU_ET_PTD | ((va2pa((unsigned long)p)) >> 4);
             l1[(va >> SRMMU_PGDIR_SHIFT) & (SRMMU_PTRS_PER_PGD - 1)] = pte;
             /* barrier() */
         } else {
-            return 1;
+            return -1;
         }
     }
 
@@ -141,11 +141,11 @@
             p = mem_zalloc(&cmem, SRMMU_PTRS_PER_PTE * sizeof(void *),
                            SRMMU_PTRS_PER_PTE * sizeof(void *));
             if (p == 0)
-                return 2;
+                return -2;
             pte = SRMMU_ET_PTD | ((va2pa((unsigned int)p)) >> 4);
             *(uint32_t *)pa2va(pa) = pte;
         } else {
-            return 2;
+            return -2;
         }
     }