[SPARC]: change if() BUG(); to BUG_ON in iommu.c

this patch changes if() BUG(); constructs
in iommu.c to BUG_ON(); so it gets save
to define BUG() and BUG_ON() to nullstatements.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index 489bf68..77840c8 100644 (file)
--- a/arch/sparc/mm/iommu.c
+++ b/arch/sparc/mm/iommu.c
@@ -295,8 +295,7 @@ static void iommu_release_one(u32 busa, int npages, struct sbus_bus *sbus)
        int ioptex;
        int i;
 
-       if (busa < iommu->start)
-               BUG();
+       BUG_ON(busa < iommu->start);
        ioptex = (busa - iommu->start) >> PAGE_SHIFT;
        for (i = 0; i < npages; i++) {
                iopte_val(iommu->page_table[ioptex + i]) = 0;
@@ -340,9 +339,9 @@ static int iommu_map_dma_area(dma_addr_t *pba, unsigned long va,
        iopte_t *first;
        int ioptex;
 
-       if ((va & ~PAGE_MASK) != 0) BUG();
-       if ((addr & ~PAGE_MASK) != 0) BUG();
-       if ((len & ~PAGE_MASK) != 0) BUG();
+       BUG_ON((va & ~PAGE_MASK) != 0);
+       BUG_ON((addr & ~PAGE_MASK) != 0);
+       BUG_ON((len & ~PAGE_MASK) != 0);
 
        /* page color = physical address */
        ioptex = bit_map_string_get(&iommu->usemap, len >> PAGE_SHIFT,
@@ -405,8 +404,8 @@ static void iommu_unmap_dma_area(unsigned long busa, int len)
        unsigned long end;
        int ioptex = (busa - iommu->start) >> PAGE_SHIFT;
 
-       if ((busa & ~PAGE_MASK) != 0) BUG();
-       if ((len & ~PAGE_MASK) != 0) BUG();
+       BUG_ON((busa & ~PAGE_MASK) != 0);
+       BUG_ON((len & ~PAGE_MASK) != 0);
 
        iopte += ioptex;
        end = busa + len;