diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index f20c20a7853d051ab74798092dab5f32b72f2200..021f3c684a62e1df68878d636ead0930b75fe548 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -104,7 +104,6 @@ static unsigned long alloc_iommu(struct device *dev, int size)
 					  size, base_index, boundary_size, 0);
 	}
 	if (offset != -1) {
-		set_bit_string(iommu_gart_bitmap, offset, size);
 		next_bit = offset+size;
 		if (next_bit >= iommu_pages) {
 			next_bit = 0;