[MTD] Use DIV_ROUND_UP

The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

3 files changed, 3 insertions, 4 deletions

diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 5f1b472137a0..d49cbe2738a8 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -1640,7 +1640,7 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
 
         /* Figure out the number of words to write */
         word_gap = (-adr & (map_bankwidth(map)-1));
-        words = (len - word_gap + map_bankwidth(map) - 1) / map_bankwidth(map);
+        words = DIV_ROUND_UP(len - word_gap, map_bankwidth(map));
         if (!word_gap) {
                 words--;
         } else {
diff --git a/drivers/mtd/chips/gen_probe.c b/drivers/mtd/chips/gen_probe.c
index f061885b2812..e2dc96441e05 100644
--- a/drivers/mtd/chips/gen_probe.c
+++ b/drivers/mtd/chips/gen_probe.c
@@ -111,7 +111,7 @@ static struct cfi_private *genprobe_ident_chips(struct map_info *map, struct chi
                 max_chips = 1;
         }
 
-        mapsize = sizeof(long) * ( (max_chips + BITS_PER_LONG-1) / BITS_PER_LONG );
+        mapsize = sizeof(long) * DIV_ROUND_UP(max_chips, BITS_PER_LONG);
         chip_map = kzalloc(mapsize, GFP_KERNEL);
         if (!chip_map) {
                 printk(KERN_WARNING "%s: kmalloc failed for CFI chip map\n", map->name);
diff --git a/drivers/mtd/ssfdc.c b/drivers/mtd/ssfdc.c
index a5f3d60047d4..33a5d6ed6f18 100644
--- a/drivers/mtd/ssfdc.c
+++ b/drivers/mtd/ssfdc.c
@@ -321,8 +321,7 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
         DEBUG(MTD_DEBUG_LEVEL1,
                 "SSFDC_RO: cis_block=%d,erase_size=%d,map_len=%d,n_zones=%d\n",
                 ssfdc->cis_block, ssfdc->erase_size, ssfdc->map_len,
-                (ssfdc->map_len + MAX_PHYS_BLK_PER_ZONE - 1) /
-                MAX_PHYS_BLK_PER_ZONE);
+                DIV_ROUND_UP(ssfdc->map_len, MAX_PHYS_BLK_PER_ZONE));
 
         /* Set geometry */
         ssfdc->heads = 16;