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>
diff --git a/arch/sparc/mm/sun4c.c b/arch/sparc/mm/sun4c.c
index 2ffacd6..a89baf0 100644
--- a/arch/sparc/mm/sun4c.c
+++ b/arch/sparc/mm/sun4c.c
@@ -17,6 +17,7 @@
#include <linux/fs.h>
#include <linux/seq_file.h>
#include <linux/scatterlist.h>
+#include <linux/bitmap.h>
#include <asm/sections.h>
#include <asm/page.h>
@@ -1021,20 +1022,12 @@
npages = (((unsigned long)vaddr & ~PAGE_MASK) +
size + (PAGE_SIZE-1)) >> PAGE_SHIFT;
- scan = 0;
local_irq_save(flags);
- for (;;) {
- scan = find_next_zero_bit(sun4c_iobuffer_map,
- iobuffer_map_size, scan);
- if ((base = scan) + npages > iobuffer_map_size) goto abend;
- for (;;) {
- if (scan >= base + npages) goto found;
- if (test_bit(scan, sun4c_iobuffer_map)) break;
- scan++;
- }
- }
+ base = bitmap_find_next_zero_area(sun4c_iobuffer_map, iobuffer_map_size,
+ 0, npages, 0);
+ if (base >= iobuffer_map_size)
+ goto abend;
-found:
high = ((base + npages) << PAGE_SHIFT) + sun4c_iobuffer_start;
high = SUN4C_REAL_PGDIR_ALIGN(high);
while (high > sun4c_iobuffer_high) {