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-rw-r--r--arch/powerpc/platforms/powernv/pci-ioda.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index 4cfe704106da..7e1e4f105b94 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -3504,7 +3504,8 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np,
PNV_IODA1_DMA32_SEGSIZE;
/* Allocate aux data & arrays. We don't have IO ports on PHB3 */
- size = _ALIGN_UP(phb->ioda.total_pe_num / 8, sizeof(unsigned long));
+ size = _ALIGN_UP(max_t(unsigned, phb->ioda.total_pe_num, 8) / 8,
+ sizeof(unsigned long));
m64map_off = size;
size += phb->ioda.total_pe_num * sizeof(phb->ioda.m64_segmap[0]);
m32map_off = size;