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authorTapasweni Pathak <tapaswenipathak@gmail.com>2014-10-08 22:55:45 +0530
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-10-20 10:29:19 +0800
commit583bea6c40fa281a6735a717d1855f31f2c6b187 (patch)
treef0d0a81e38244e0ee5d8ddb699a312b7f890071b
parent146ea83566881aecb68dbf15e30a1c945116d1c4 (diff)
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>
-rw-r--r--drivers/staging/comedi/drivers.c3
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;