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staging: rdma: hfi1: Use DIV_ROUND_UP 

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

The Coccinelle script used is as follows:

// <smpl>
@@
expression n,d;
@@
(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
|
- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)
@@
expression n,d;
@@
- DIV_ROUND_UP((n),d)
+ DIV_ROUND_UP(n,d)
@@
expression n,d;
@@
- DIV_ROUND_UP(n,(d))
+ DIV_ROUND_UP(n,d)
// </smpl>

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Amitoj Kaur Chawla 2016-02-20 13:58:27 +05:30 committed by Greg Kroah-Hartman
parent 94b397cd25
commit 809487c703
1 changed files with 3 additions and 3 deletions
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6
drivers/staging/rdma/hfi1/mr.c
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@ -70,7 +70,7 @@ static int init_mregion(struct hfi1_mregion *mr, struct ib_pd *pd,
int m, i = 0;
int rval = 0;
m = (count + HFI1_SEGSZ - 1) / HFI1_SEGSZ;
m = DIV_ROUND_UP(count, HFI1_SEGSZ);
for (; i < m; i++) {
mr->map[i] = kzalloc(sizeof(*mr->map[0]), GFP_KERNEL);
if (!mr->map[i])
@ -159,7 +159,7 @@ static struct hfi1_mr *alloc_mr(int count, struct ib_pd *pd)
int m;
/* Allocate struct plus pointers to first level page tables. */
m = (count + HFI1_SEGSZ - 1) / HFI1_SEGSZ;
m = DIV_ROUND_UP(count, HFI1_SEGSZ);
mr = kzalloc(sizeof(*mr) + m * sizeof(mr->mr.map[0]), GFP_KERNEL);
if (!mr)
goto bail;
@ -333,7 +333,7 @@ struct ib_fmr *hfi1_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
int rval = -ENOMEM;
/* Allocate struct plus pointers to first level page tables. */
m = (fmr_attr->max_pages + HFI1_SEGSZ - 1) / HFI1_SEGSZ;
m = DIV_ROUND_UP(fmr_attr->max_pages, HFI1_SEGSZ);
fmr = kzalloc(sizeof(*fmr) + m * sizeof(fmr->mr.map[0]), GFP_KERNEL);
if (!fmr)
goto bail;