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Commit dcd261ba authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt
Browse files

powerpc/iommu: Fix iommu pool initialization 



The iommu pool patch has a bug where it would cause a crash when using
only one pool (based on the size of the DMA window).

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent af3bf7fb

arch/powerpc/kernel/iommu.c

+2 −2
Original line number Diff line number Diff line
@@ -676,9 +676,9 @@ struct iommu_table *iommu_init_table(struct iommu_table *tbl, int nid) 
		tbl->nr_pools = 1;



	/* We reserve the top 1/4 of the table for large allocations */

	tbl->poolsize = (tbl->it_size * 3 / 4) / IOMMU_NR_POOLS;

	tbl->poolsize = (tbl->it_size * 3 / 4) / tbl->nr_pools;



	for (i = 0; i < IOMMU_NR_POOLS; i++) {

	for (i = 0; i < tbl->nr_pools; i++) {

		p = &tbl->pools[i];

		spin_lock_init(&(p->lock));

		p->start = tbl->poolsize * i;