- ppc_md.tce_build(tbl, entry, npages, (unsigned long)page & IOMMU_PAGE_MASK,
- direction, attrs);
+ build_fail = ppc_md.tce_build(tbl, entry, npages,
+ (unsigned long)page & IOMMU_PAGE_MASK,
+ direction, attrs);
+
+ /* ppc_md.tce_build() only returns non-zero for transient errors.
+ * Clean up the table bitmap in this case and return
+ * DMA_ERROR_CODE. For all other errors the functionality is
+ * not altered.
+ */
+ if (unlikely(build_fail)) {
+ __iommu_free(tbl, ret, npages);