sparc64: Fix build errors with gcc-4.6.0

Most of the warnings emitted (we fail arch/sparc file
builds with -Werror) were legitimate but harmless, however
one case (n2_pcr_write) was a genuine bug.

Based almost entirely upon a patch by Sam Ravnborg.

Reported-by: Dennis Gilmore <dennis@ausil.us>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 2 deletions

diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c
index 629160772a9..6cf53468178 100644
--- a/arch/sparc/kernel/pci_sun4v.c
+++ b/arch/sparc/kernel/pci_sun4v.c
@@ -580,7 +580,7 @@ static int __devinit pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
 {
         static const u32 vdma_default[] = { 0x80000000, 0x80000000 };
         struct iommu *iommu = pbm->iommu;
-        unsigned long num_tsb_entries, sz, tsbsize;
+        unsigned long num_tsb_entries, sz;
         u32 dma_mask, dma_offset;
         const u32 *vdma;
 
@@ -596,7 +596,6 @@ static int __devinit pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
 
         dma_mask = (roundup_pow_of_two(vdma[1]) - 1UL);
         num_tsb_entries = vdma[1] / IO_PAGE_SIZE;
-        tsbsize = num_tsb_entries * sizeof(iopte_t);
 
         dma_offset = vdma[0];