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

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37214 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold
2010-06-21 21:48:02 +00:00
parent d108c41998
commit 509c0b22d5
1 changed files with 9 additions and 0 deletions
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src/add-ons/kernel/drivers/graphics/radeon/DMA.c
+9
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@@ -88,6 +88,15 @@ static status_t Radeon_PrepareDMA(
if( contig_size == 0 ) if( contig_size == 0 )
break; 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; target += contig_size;
while( contig_size > 0 ) { while( contig_size > 0 ) {