Radeon_PrepareDMA(): Fail when encountering physical addresses > 4 GB.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37214 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-06-21 21:48:02 +00:00
parent d108c41998
commit 509c0b22d5
1 changed files with 9 additions and 0 deletions
@@ -88,6 +88,15 @@ static status_t Radeon_PrepareDMA(
 			if( contig_size == 0 )
 				break;

+#if B_HAIKU_PHYSICAL_BITS > 32
+			if (address + contig_size > (phys_addr_t)1 << 32) {
+				SHOW_ERROR(2, "Physical address > 4 GB: %#" B_PRIxPHYSADDR
+					"size: %#" B_PRIxSIZE, address, size);
+				res = B_BAD_VALUE;
+				goto err;
+			}
+#endif
+
 			target += contig_size;

 			while( contig_size > 0 ) {