sparc: use bitmap_find_next_zero_area

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 12 deletions

diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c
index e0ba898e30cf..df39a0f0d27a 100644
--- a/arch/sparc/kernel/ldc.c
+++ b/arch/sparc/kernel/ldc.c
@@ -14,6 +14,7 @@
 #include <linux/interrupt.h>
 #include <linux/list.h>
 #include <linux/init.h>
+#include <linux/bitmap.h>
 
 #include <asm/hypervisor.h>
 #include <asm/iommu.h>
@@ -1875,7 +1876,7 @@ EXPORT_SYMBOL(ldc_read);
 static long arena_alloc(struct ldc_iommu *iommu, unsigned long npages)
 {
         struct iommu_arena *arena = &iommu->arena;
-        unsigned long n, i, start, end, limit;
+        unsigned long n, start, end, limit;
         int pass;
 
         limit = arena->limit;
@@ -1883,7 +1884,7 @@ static long arena_alloc(struct ldc_iommu *iommu, unsigned long npages)
         pass = 0;
 
 again:
-        n = find_next_zero_bit(arena->map, limit, start);
+        n = bitmap_find_next_zero_area(arena->map, limit, start, npages, 0);
         end = n + npages;
         if (unlikely(end >= limit)) {
                 if (likely(pass < 1)) {
@@ -1896,16 +1897,7 @@ again:
                         return -1;
                 }
         }
-
-        for (i = n; i < end; i++) {
-                if (test_bit(i, arena->map)) {
-                        start = i + 1;
-                        goto again;
-                }
-        }
-
-        for (i = n; i < end; i++)
-                __set_bit(i, arena->map);
+        bitmap_set(arena->map, n, npages);
 
         arena->hint = end;