mesa: make mm.c use unsigned ints for offsets.

If you have a GPU using this code and it has the offsets up in this space,
this fails.

2 files changed, 7 insertions, 6 deletions

diff --git a/src/mesa/main/mm.c b/src/mesa/main/mm.c
index 846c329c70d..fb7809ed221 100644
--- a/src/mesa/main/mm.c
+++ b/src/mesa/main/mm.c
@@ -53,7 +53,7 @@ mmDumpMemInfo(const struct mem_block *heap)
 }
 
 struct mem_block *
-mmInit(int ofs, int size)
+mmInit(unsigned int ofs, int size)
 {
    struct mem_block *heap, *block;
   
@@ -91,7 +91,7 @@ mmInit(int ofs, int size)
 
 static struct mem_block *
 SliceBlock(struct mem_block *p, 
-           int startofs, int size, 
+           unsigned int startofs, int size, 
            int reserved, int alignment)
 {
    struct mem_block *newblock;
@@ -164,8 +164,8 @@ mmAllocMem(struct mem_block *heap, int size, int align2, int startSearch)
 {
    struct mem_block *p;
    const int mask = (1 << align2)-1;
-   int startofs = 0;
-   int endofs;
+   unsigned int startofs = 0;
+   unsigned int endofs;
 
    if (!heap || align2 < 0 || size <= 0)
       return NULL;
diff --git a/src/mesa/main/mm.h b/src/mesa/main/mm.h
index 26d59fff139..5ad3ffd6d15 100644
--- a/src/mesa/main/mm.h
+++ b/src/mesa/main/mm.h
@@ -39,7 +39,8 @@ struct mem_block {
    struct mem_block *next, *prev;
    struct mem_block *next_free, *prev_free;
    struct mem_block *heap;
-   int ofs,size;
+   unsigned int ofs;
+   int size;
    unsigned int free:1;
    unsigned int reserved:1;
 };
@@ -50,7 +51,7 @@ struct mem_block {
  * input: total size in bytes
  * return: a heap pointer if OK, NULL if error
  */
-extern struct mem_block *mmInit(int ofs, int size);
+extern struct mem_block *mmInit(unsigned int ofs, int size);
 
 /**
  * Allocate 'size' bytes with 2^align2 bytes alignment,