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| author |   Tapasweni Pathak <tapaswenipathak@gmail.com> | 2014-10-08 22:55:45 +0530 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-10-20 10:29:19 +0800 |
| commit | 583bea6c40fa281a6735a717d1855f31f2c6b187 (patch) | |
| tree | f0d0a81e38244e0ee5d8ddb699a312b7f890071b /drivers/staging/comedi/drivers.c | |
| parent | staging: speakup: Use time_after_eq to compare jiffies in speakup_keypc.c (diff) | |
| download | linux-dev-583bea6c40fa281a6735a717d1855f31f2c6b187.tar.xz linux-dev-583bea6c40fa281a6735a717d1855f31f2c6b187.zip | |
staging: comedi: use DIV_ROUND_UP
The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.
Coccinelle script used :
// <smpl>
@haskernel@
@@
@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: Tapasweni Pathak <tapaswenipathak@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/drivers.c')
| -rw-r--r-- | drivers/staging/comedi/drivers.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c index 3e5bccbc9c39..859b722188cc 100644 --- a/drivers/staging/comedi/drivers.c +++ b/drivers/staging/comedi/drivers.c @@ -317,8 +317,7 @@ unsigned int comedi_bytes_per_scan(struct comedi_subdevice *s) case COMEDI_SUBD_DO: case COMEDI_SUBD_DIO: bits_per_sample = 8 * bytes_per_sample(s); - num_samples = (cmd->chanlist_len + bits_per_sample - 1) / - bits_per_sample; + num_samples = DIV_ROUND_UP(cmd->chanlist_len, bits_per_sample); break; default: num_samples = cmd->chanlist_len; |