scsi: qedi: tidy up a size calculation
authorDan Carpenter <dan.carpenter@oracle.com>
Thu, 28 Jun 2018 09:23:10 +0000 (12:23 +0300)
committerMartin K. Petersen <martin.petersen@oracle.com>
Mon, 2 Jul 2018 20:17:22 +0000 (16:17 -0400)
The id_tbl->table pointer points to unsigned long so static checkers
complain that instead of 4 we should be allocating sizeof(long) bytes.

We're trying to allocate enough bits for the bitmap.  The size variable is
always 1024.  (1024 / 32 * 4) is the same as (1024 / 64 * 8) so this
doesn't change runtime, but this is the more idiomatic way to do it and
makes the static checker happy.

[mkp: typo]

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Manish Rangankar <Manish.Rangankar@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/scsi/qedi/qedi_main.c

index cf274a79e77aac86d338d358a71a753636002812..682f3ce31014dc897316d3142cffe983f8d64608 100644 (file)
@@ -524,7 +524,7 @@ static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
        id_tbl->max = size;
        id_tbl->next = next;
        spin_lock_init(&id_tbl->lock);
-       id_tbl->table = kcalloc(DIV_ROUND_UP(size, 32), 4, GFP_KERNEL);
+       id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL);
        if (!id_tbl->table)
                return -ENOMEM;