[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>

1 files changed, 6 insertions, 7 deletions

diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index 489bf68d5f05..77840c804786 100644
--- 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;