swiotlb: Remove the swiotlb variable usage
POWERPC doesn't expect it to be used.
This fixes the linux-next build failure reported by
Stephen Rothwell:
lib/swiotlb.c: In function 'setup_io_tlb_npages':
lib/swiotlb.c:114: error: 'swiotlb' undeclared (first use in this function)
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: peterz@infradead.org
LKML-Reference: <20091112000258F.fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index f79870e..0b11bf1 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -125,16 +125,13 @@
void __init pci_iommu_alloc(void)
{
- /* swiotlb is forced by the boot option */
- int use_swiotlb = swiotlb;
#ifdef CONFIG_X86_64
/* free the range so iommu could get some range less than 4G */
dma32_free_bootmem();
#else
dma_ops = &nommu_dma_ops;
#endif
- pci_swiotlb_init();
- if (use_swiotlb)
+ if (pci_swiotlb_init())
return;
gart_iommu_hole_init();