mtd: block2mtd: Use kasprintf

kasprintf combines kmalloc and sprintf, and takes care of the size
calculation itself.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression a,flag;
expression list args;
statement S;
@@

  a =
-  \(kmalloc\|kzalloc\)(...,flag)
+  kasprintf(flag,args)
  <... when != a
  if (a == NULL || ...) S
  ...>
- sprintf(a,args);
// </smpl>

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

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index 8c295f40d2ac..4281f3e0cf7f 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -275,12 +275,10 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size)
 
         /* Setup the MTD structure */
         /* make the name contain the block device in */
-        name = kmalloc(sizeof("block2mtd: ") + strlen(devname) + 1,
-                        GFP_KERNEL);
+        name = kasprintf(GFP_KERNEL, "block2mtd: %s", devname);
         if (!name)
                 goto devinit_err;
 
-        sprintf(name, "block2mtd: %s", devname);
         dev->mtd.name = name;
 
         dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK;