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| author | Julia Lawall <julia@diku.dk> | 2008-09-22 14:57:16 -0700 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 08:56:19 +0200 |
| commit | 061837bc8687edc2739ef02f721b7ae0b8076390 (patch) | |
| tree | e1c59ea7212949a91b2cf19ed125c0db24052b29 /drivers/block/cpqarray.c | |
| parent | 905bd78f2188da69e74966918e3d71df3dff382b (diff) | |
| download | op-kernel-dev-061837bc8687edc2739ef02f721b7ae0b8076390.zip op-kernel-dev-061837bc8687edc2739ef02f721b7ae0b8076390.tar.gz | |
drivers/block: Use DIV_ROUND_UP
The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.
An extract of the semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@haskernel@
@@
#include <linux/kernel.h>
@depends on haskernel@
expression n,d;
@@
(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
|
- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP((n),d)
+ DIV_ROUND_UP(n,d)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP(n,(d))
+ DIV_ROUND_UP(n,d)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/block/cpqarray.c')
| -rw-r--r-- | drivers/block/cpqarray.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c index 09c1434..3d96752 100644 --- a/drivers/block/cpqarray.c +++ b/drivers/block/cpqarray.c @@ -424,7 +424,7 @@ static int __init cpqarray_register_ctlr( int i, struct pci_dev *pdev) hba[i]->pci_dev, NR_CMDS * sizeof(cmdlist_t), &(hba[i]->cmd_pool_dhandle)); hba[i]->cmd_pool_bits = kcalloc( - (NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG, sizeof(unsigned long), + DIV_ROUND_UP(NR_CMDS, BITS_PER_LONG), sizeof(unsigned long), GFP_KERNEL); if (!hba[i]->cmd_pool_bits || !hba[i]->cmd_pool) |
