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powerpc/cell: Fix cell iommu after it_page_shift changes 

The patch to add it_page_shift incorrectly changed the increment of
uaddr to use it_page_shift, rather then (1 << it_page_shift).

This broke booting on at least some Cell blades, as the iommu was
basically non-functional.

Fixes: 3a553170d3 ("powerpc/iommu: Add it_page_shift field to determine iommu page size")
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Ellerman 2015-04-03 14:11:54 +11:00
parent b0dd00addc
commit 7261b956b2
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/platforms/cell/iommu.c
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@ -197,7 +197,7 @@ static int tce_build_cell(struct iommu_table *tbl, long index, long npages,
io_pte = (unsigned long *)tbl->it_base + (index - tbl->it_offset);
for (i = 0; i < npages; i++, uaddr += tbl->it_page_shift)
for (i = 0; i < npages; i++, uaddr += (1 << tbl->it_page_shift))
io_pte[i] = base_pte | (__pa(uaddr) & CBE_IOPTE_RPN_Mask);
mb();