pseries/iommu: Fix iteration in DDW TCE clearrange

PATCH New Nishanth Aravamudan 1 participant 1 message Jan 18, 2013 PowerPC

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Nishanth Aravamudan

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2013-01-18 19:17 UTC #0 lore raw

PATCH 1/1 pseries/iommu: Fix iteration in DDW TCE clearrange

tce_clearrange_multi_pSeriesLP is attempting to iterate over all TCEs in a given range. However, is it not advancing the dma_offset value passed to plpar_tce_stuff via the next value. This prevents DLPAR from completing, because TCEs are still present at slot isolation time.

Signed-off-by Nishanth Aravamudan <[email protected]>

arch/powerpc/platforms/pseries/iommu.c +1 -0

index e2685ba..a55b685 100644
@@ -382,6 +382,7 @@ static int tce_clearrange_multi_pSeriesLP(unsigned long start_pfn,
 		rc = plpar_tce_stuff((u64)be32_to_cpu(maprange->liobn),
 					     dma_offset,
 					     0, limit);
+		next += limit * tce_size;
 		num_tce -= limit;
 	} while (num_tce > 0 && !rc);